The times (in seconds) for the 100 meter swimming world records for the last 100

Question

The times (in seconds) for the 100 meter swimming world records for the last 100 years are summarized in the boxplots below: Which of the following is NOT correct? The female swim record times show less variability than the male. More than 50% of the male swim record times are between 50 and 60 seconds. About 25% of the female times are less than 57 seconds. The mean time for females is approximately 65 seconds. All of the times for the male swim records are less than 75% of the female times. The distribution that has the box plot shown above for the female swim times could be described as roughly symmetric skewed right skewed left uniformed none of these

Explanation / Answer

a) false, as the box width is more in females, their is more variablility.

b)true; as box width is 50%,and 50to 60 seconds contain box plus some values.

c)true as box lower limit represent Q1 which is at 25 percentile,

d)true, as box plot of female is right skewed and hence mean tends to be greater then median(63)

e)false ; as male swim records upper limit, coincide with 50% of female values,

2) b )rightly skewed.

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