# More men killed by someone close than women?

**URL:** <https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133>\
**Category:** In My Humble Opinion\
**Created:** [November 26, 2018, 10:45pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133 "2018-11-26T22:45:42Z")\
**Posts on this page:** 20\
**Page:** 2

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**Author:** ![Quartz](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/quartz/32/267_2.png) [@Quartz](https://boards.straightdope.com/u/Quartz)\
**Post date:** [November 27, 2018, 4:09pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/21 "2018-11-27T16:09:00Z")

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> [@Riemann](#):
>
> Yes, your maths is wrong. The article (and the raw data in the pdf) does not say that 36% of all murdered men were killed by someone close,

Actually, yes it does. The third bar chart only looks at those who are murdered by someone close and says that 64% of women who are murdered are murdered by someone close and that 36% of men who are murdered are murdered by someone close

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**Author:** ![pulykamell](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pulykamell/32/3166_2.png) [@pulykamell](https://boards.straightdope.com/u/pulykamell)\
**Post date:** [November 27, 2018, 4:10pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/22 "2018-11-27T16:10:25Z")

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> [@Quartz](#):
>
> Yes, but if you work the numbers as I did, it appears that more men in absolute numbers are murdered by someone close than women.

I haven’t done the math, but glancing at the numbers, yes, I would expect that to be correct.

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 4:20pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/23 "2018-11-27T16:20:45Z")

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> [@Quartz](#):
>
> Yes, but if you work the numbers as I did, it appears that more men are murdered by someone close than women.

It’s not a question of two different ways of looking at it - your calculation is **wrong,** as I have explained. You are mistakenly taking the 36% figure in the article to mean the proportion of all murdered men who are murdered by someone close. It is not, 36% is the proportion of all people murdered by someone close who are men.

The 64% women / 36% men figure quoted in the article IS the figure that you are wrongly trying to calculate. Almost twice as many women as men are murdered by someone close.

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 4:26pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/24 "2018-11-27T16:26:08Z")

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> [@Quartz](#):
>
> Actually, yes it does. The third bar chart only looks at those who are murdered by someone close and says that 64% of women who are murdered are murdered by someone close and that 36% of men who are murdered are murdered by someone close

No, it does not. You are misreading it. The third bar chart takes all people murdered by someone close, and shows the M/F proportions of those homicides.

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 4:36pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/25 "2018-11-27T16:36:00Z")

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> [@pulykamell](#):
>
> I haven’t done the math, but glancing at the numbers, yes, I would expect that to be correct.

Then you will need to glance more carefully, it is not correct.

The counterintuitive **point** of the UN report and the BBC article is that although only 20% of the victims of _all homicides_ are women, 64% of the victims of _homicides committed by a partner or family member_ are women.

Again, that last figure is no something we need to calculate. It is stated explicitly in the article at chart 3 and in the original UN document. It **is** the figure that Quartz is wrongly trying to calculate.

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**Author:** ![pulykamell](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pulykamell/32/3166_2.png) [@pulykamell](https://boards.straightdope.com/u/pulykamell)\
**Post date:** [November 27, 2018, 5:05pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/26 "2018-11-27T17:05:55Z")

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> [@Riemann](#):
>
> Then you will need to glance more carefully, it is not correct.
> 
> The counterintuitive **point** of the UN report and the BBC article is that although only 20% of the victims of _all homicides_ are women, 64% of the victims of _homicides committed by a partner or family member_ are women.
> 
> Again, that last figure is no something we need to calculate. It is stated explicitly in the article at chart 3 and in the original UN document. It **is** the figure that Quartz is wrongly trying to calculate.

Ah, yes, yes, I see. My glancing did cause me to misread that. I read that as 64% of all homicides of women were killings by a partner or family member, where that second graph is saying that of the homicides that were killings by partner or family member, 64% of them were female, and 36% were male, which means that in raw numbers, there are more female victims.

Got it. Skimmed it too cursorily.

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 5:10pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/27 "2018-11-27T17:10:46Z")

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Exactly. If you made the same initial misreading as Quartz, perhaps the BBC could have described that third bar chart more clearly. But that’s definitely what it means, per the linked UN report.

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 5:19pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/28 "2018-11-27T17:19:35Z")

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ETA: In fact on reflection I _do_ think the BBC presentation is pretty clear and can only be read one way. If chart 3 were the proportion of all female homicides committed by someone close & the proportion of all male homicides committed by someone close as Quartz supposed, then those would be two separate percentages that do not sum to 100 - so it would not be presented in a bar chart like that. And the former statistic is already given in chart 1 (58%).

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**Author:** ![pulykamell](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pulykamell/32/3166_2.png) [@pulykamell](https://boards.straightdope.com/u/pulykamell)\
**Post date:** [November 27, 2018, 5:40pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/29 "2018-11-27T17:40:53Z")

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No, it should have been immediately obvious to me that I was reading that wrong, as that percentage should seem high and,more importantly, it would only add up to 100% by sheer coincidence if it had the meaning was as I was initially reading it. (ETA: which I see now is a point you just made in your addendum. :))

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**Author:** ![Darkon](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@Darkon](https://boards.straightdope.com/u/Darkon)\
**Post date:** [November 27, 2018, 5:43pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/30 "2018-11-27T17:43:50Z")

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> [@Quartz](#):
>
> Is [this BBC article](https://www.bbc.co.uk/news/world-46292919) grossly misrepresenting the truth? OR (more likely) am I failing at basic maths?
> 
> It says
> 
> But if (all figures from the article) 80% of killings are of men and 36% of those are by someone close then 28.8% (0.8 \* 0.36) of deaths are due to someone close. And if 20% of killings are of women and 64% of those are by someone close then 12.8% (0.2 \* 0.64) of deaths are due to someone close. Which means that it is men who are actually more likely to be killed by someone close.
> 
> Or is my maths wrong?

I think it’s clear from the article you cite that they’re talking about the percentages of the genders killed by those close to them and not the actual numbers of those murdered.

Also, not covered by those statistics is the fact that men kill most of both genders.

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 5:51pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/31 "2018-11-27T17:51:23Z")

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> [@Darkon](#):
>
> I think it’s clear from the article you cite that they’re talking about the percentages of the genders killed by those close to them and not the actual numbers of those murdered.

Again, nope. You seem to be just paraphrasing Quartz’s error.

The key statistic is: of all people murdered by someone close, almost two thirds (64%) are women.

The fact that this is very surprising given than only 20% of _all_ homicide victims are women is the point of the report and the article.

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**Author:** ![Darkon](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@Darkon](https://boards.straightdope.com/u/Darkon)\
**Post date:** [November 27, 2018, 7:28pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/32 "2018-11-27T19:28:19Z")

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> [@Riemann](#):
>
> Again, nope. You seem to be just paraphrasing Quartz’s error.

Quartz’s math is not wrong\*, but he missed the point of the article. As I clearly stated above, the article is not about the numbers of those actually killed in any category, it’s about the percentages of men and women killed by those close to them and that the percentage of women killed is far greater. Please read more carefully.

And it’s not surprising that so many women are killed by those close to them if one is paying attention to what goes on in our world today.

\*Assuming 100 deaths, then 20 are women and 80 are men. 36% of 80 is 28.8 and 64% of 20 is 12.8, so he was right: more men are murdered by those close to them.

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 7:47pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/33 "2018-11-27T19:47:00Z")

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> [@Darkon](#):
>
> Quartz’s math is not wrong\*, but he missed the point of the article. As I clearly stated above, the article is not about the numbers of those actually killed in any category, it’s about the percentages of men and women killed by those close to them and that the percentage of women killed is far greater. Please read more carefully.
> 
> \*Assuming 100 deaths, then 20 are women and 80 are men. 36% of 80 is 28.8 and 64% of 20 is 12.8, so he was right: more men are murdered by those close to them.

Please read the thread more carefully, I’m getting sick of repeating myself. Quartz is wrong, you are wrong, that math is wrong, because **36% is not the correct input into that calculation**.

The input into the calculation that you and Quartz are trying to do is:  
Take all murders where the victim is male.  
X% is the proportion of those murders where the perpetrator is someone close.  
X is not stated explicitly in the article, but if you do the math it works out to around 10%, not 36%.

And you don’t need to do the calculation that you Quartz attempt, because the **result** of that calculation is the statistic that is provided explicitly.

Once again, the statistic provided in bar chart 3 in the article is this:

**Take all murders where the perpetrator is someone close.  
Of those murders, 64% of victims are female, 36% of victims are male.**

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**Author:** ![Buck\_Godot](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/buck_godot/32/6573_2.png) [@Buck\_Godot](https://boards.straightdope.com/u/Buck_Godot)\
**Post date:** [November 27, 2018, 8:13pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/34 "2018-11-27T20:13:47Z")

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> [@Darkon](#):
>
> Quartz’s math is not wrong\*, but he missed the point of the article. As I clearly stated above, the article is not about the numbers of those actually killed in any category, it’s about the percentages of men and women killed by those close to them and that the percentage of women killed is far greater. Please read more carefully.
> 
> And it’s not surprising that so many women are killed by those close to them if one is paying attention to what goes on in our world today.
> 
> \*Assuming 100 deaths, then 20 are women and 80 are men. 36% of 80 is 28.8 and 64% of 20 is 12.8, so he was right: more men are murdered by those close to them.

But as stated above by Riemann said above, this is not the correct interpretation of the 36% and 64% numbers. It wasn’t that 36% of men who were killed were killed by someone they knew, it was that 36% of those who were killed by someone they knew were men.

Of 100% of people killed, 20% are women 80% are men. (second bar graph on page)

Of the 20% women killed 58% were killed by someone close to them (first bar graph on page). So of the people killed 11.6% (20%\*0.58) are women killed by someone close

This 11.6 represents 64% of the people killed by someone close (3rd bar graph on page). So in total of 18.125% (11.6%/.64) of people killed were killed by someone close

Therefor 6.525% of those killed are males killed by someone close (18.125% - 11.6%)

Therefor 73.475% of those killed are males killed by someone not close (80%-6.525%)

So the final breakdown appears to be  
73.475% of those killed are males killed by someone not close.  
9.4% of those killed are females killed by someone not close.  
6.525% of those killed are males killed by someone close.  
11.6% of those killed are females killed by someone close.

Quartz is incorrect.

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 8:23pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/35 "2018-11-27T20:23:17Z")

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nm

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 8:39pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/36 "2018-11-27T20:39:49Z")

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> [@Buck\_Godot](#):
>
> So the final breakdown appears to be  
> 73.475% of those killed are males killed by someone not close.  
> 9.4% of those killed are females killed by someone not close.  
> 6.525% of those killed are males killed by someone close.  
> 11.6% of those killed are females killed by someone close.

I attempted the same calculation at post 15, via the cited “one in five of all murders are committed by some close”, which is probably only accurate to one sf. You did the calculation a better way using the more accurate 58% figure, so your results are probably more accurate (except for an arithmetic error, second number should be 8.4% I think).

So we have:

Out of all murders,  
73.5% perpetrator is a stranger, victim is male  
8.4% perpetrator is a stranger, victim is female  
6.5% perpetrator is someone close, victim is male  
11.6% perpetrator is someone close, victim is female

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**Author:** ![Riemann](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/riemann/32/3133_2.png) [@Riemann](https://boards.straightdope.com/u/Riemann)\
**Post date:** [November 27, 2018, 8:50pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/37 "2018-11-27T20:50:03Z")

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> [@Riemann](#):
>
> Out of all murders,  
> 73.5% perpetrator is a stranger, victim is male  
> 8.4% perpetrator is a stranger, victim is female  
> 6.5% perpetrator is someone close, victim is male  
> 11.6% perpetrator is someone close, victim is female

From these figures, various outputs to back check:

Of all murders, proportion where victim is female?  
(8.4%+11.6%) = **20%**

Of all murders where victim is female, proportion where perpetrator is close?  
11.6/(8.4+11.6) = **58%**

Of all murders where perpetrator is close, proportion where victim is female?  
11.6/(6.5+11.6) = **64%**

Of all murders where victim is male, proportion where perpetrator is close?  
6.5/(73.5+6.5) = **8%**

The last figure (8%) would have been the correct input into the calculation that Quartz was trying to do, where he was wrongly using 36%.

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**Author:** ![Darkon](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@Darkon](https://boards.straightdope.com/u/Darkon)\
**Post date:** [November 27, 2018, 9:26pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/38 "2018-11-27T21:26:14Z")

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Buck and Riemann should both read more carefully and stop making unwarranted assumptions. No where in the article does it say the three graphs are talking about the same numbers, especially in light of the fact that graph one’s numbers don’t match graph three’s, and it’s only reasonable to suppose graph two and three, which appear together, are using the same numbers. So whatever math you’re trying to do here is flawed from the get go. Using your logic, you should squeeze graph four into your calculations too.

On the other hand, who cares? The point of the article is that over half of women murdered are killed by a partner or relative, and that a woman is much more likely to be than a man.

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**Author:** ![Darkon](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@Darkon](https://boards.straightdope.com/u/Darkon)\
**Post date:** [November 27, 2018, 9:40pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/39 "2018-11-27T21:40:45Z")

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Oops, some of my reasoning is flawed as well, so just skip down to the part about who cares.

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**Author:** ![RitterSport](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/rittersport/32/6326_2.png) [@RitterSport](https://boards.straightdope.com/u/RitterSport)\
**Post date:** [November 27, 2018, 9:47pm UTC](https://boards.straightdope.com/t/more-men-killed-by-someone-close-than-women/825133/40 "2018-11-27T21:47:58Z")

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> [@Darkon](#):
>
> Oops, some of my reasoning is flawed as well, so just skip down to the part about who cares.

This part is easy. The OP ( **Quartz** ) cares, or else he wouldn’t have posted it. He thought the BBC may be presenting the data in a grossly misleading way, but I think he will agree that he’s wrong since he got the math wrong.

The whole point of this thread was to discuss that specifically. I’m not a mod, but coming into a thread to ask “who cares” about the main point of that thread is not a great habit.

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