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Report Properties
Owner: jbaugh57
Created: Feb 15, 2010
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Blood Pressure of Males and Females
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Data set 1. Systolic Blood Pressure   [Info]
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The following report shows the comparison of systolic blood pressure in males and females. This data set was acquired in StatCrunch, and was collected in the month of February, 2009. The gender of each respondent was noted, and their systolic blood pressure was taken.

Result 1: Male Histogram of Systolic Blood Pressure   [Info]
Right click to copy

Based on the graphical evidence, males and females have similar systolic blood pressures. The histogram of male blood pressure shows a bell-shaped curve. Majority of the males have systolic blood pressure between 110 and 140. This is typical, as “normal” systolic blood pressure is 120.

Result 2: Female Histogram of Systolic Blood Pressure   [Info]
Right click to copy

The histogram of female systolic blood pressure also shows a bell-shaped curve; therefore the Empirical Rule may be used for both males and females. With empirical rule, roughly 68% of the data will lie in 1 standard deviation, 95% within approximately 2 standard deviations, and 99.7% approximately within 3 standard deviations. The female systolic blood pressure histogram shows high frequencies of systolic blood pressure between 120 and 130, and then again at 140 to 150. High blood pressure is considered to be over 140; therefore the individuals in the 140-150 categories are categorized as having high blood pressure.

Result 3: Statistical Summary of Male and Female Systolic Blood Pressure   [Info]
Summary statistics:
Column n Mean Variance Std. Dev. Std. Err. Median Range Min Max Q1 Q3
Females BP 17 125.17647 107.02941 10.345502 2.509153 126 34 106 140 118 132
Males BP 17 124.70588 211.09558 14.529129 3.5238314 126 55 95 150 116 134

The mean of female systolic blood pressure is 125.17 with a variance of 107.0. The standard deviation is said to be roughly 10.34. The median systolic blood pressure is 126, while the range is 34. There is a minimum of 106 and a maximum of 140. There is an Interquartile Range (IQR) of 14.

The mean of male systolic blood pressure is 124.7 with a variance of 211.10. The standard deviation is said to be roughly 14.5. The median systolic blood pressure, like females, is 126, while the range is 55 (significantly higher than females). The minimum is lower than females at 95, and the maximum is higher than females, at 150. The Interquartile Range (IQR) is also higher than females at 18.

Result 4: Male and Female Box Plot of Systolic Blood Pressure   [Info]
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The boxplot for males and females seems to be slightly skewed left, but not enough to disrupt the bell-shaped curve that is illustrated in the histograms.

Result 5: Female Stem and Leaf Plot of Systolic Blood Pressure   [Info]
Variable: Females BP
Decimal point is 1 digit(s) to the right of the colon.
10 : 6
11 : 0488
12 : 024666
13 : 026
14 : 000

Result 6: Male Stem and Leaf Plot of Systolic Blood Pressure   [Info]
Variable: Males BP
Decimal point is 1 digit(s) to the right of the colon.
9 : 5
10 : 5
11 : 2268
12 : 04688
13 : 044
14 : 08
15 : 0

Listed above, is the stem and leaf plots of males and females.

Joshua Baugh

Statistics 128



Data was obtained from Lora McGuire, a Nursing instructor at Joliet Junior College.

HTML link:
<A href="">Blood Pressure of Males and Females</A>

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By msullivan13803
Mar 1, 2010

Great comments!
By aadom81
Feb 17, 2010

is it posible to have the two graphs together
By aadom81
Feb 17, 2010

By vnikole86
Feb 17, 2010

I think you did a great job on your report. It caught my attention because I am also a nursing major. It is thorough, and if you possibly had more data it would have been interesting to see what other factors played into the BP taken. I was a little surprised at the range for females versus males. However, I know that in general the average seems right, just a smaller range than I thought. But very good job!
By lalalalauren86
Feb 16, 2010

-Lauren Bibeau
By lalalalauren86
Feb 16, 2010

Great report! It seems very thorough. I wonder if the cause has something to do with the size of women compared to men. Perhaps men's and women's bodies require different blood pressures.
By armyxmedic
Feb 15, 2010

Great job. I am a nursing major myself and think this is a great data set. it reminds me of an old joke. why do married men often die before their spouse... Because the want to. (insert drums here) On the serious side i think it shows that women take better care of their bodies and deal with stress better than men.
By jcolon1323
Feb 15, 2010

I really like your report and think that it holds a lot of truth to it. If we think about it for a moment, we know that the BP's should be bell-shaped without plugging in any information. We know that most people will have an average BP of about 120 (except the few who have a higher or lower BP). The histograms you use just confirm this information showing both female and male histograms to be well bell-shaped.
By dclodf20
Feb 15, 2010

I think another important factor that is not disclosed here is the ages of the participants. Were these all college age students or just students in college, or neither? I think that age, as well as race, would be an interesting comparison. Altogether, a well informed report on the basis of just gender.
By jbaugh57
Feb 15, 2010

I know, I am a Bio major, so I would have been interested in that too; however, it was very limited to just gender and blood pressure :(
By rsileikyte
Feb 15, 2010

A very nice report for the data, although as a nurse I would love to know which race are these BP taken from also the age. African Americans have a lot higher incidence of HTN compared to caucasians.

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