Question

8. Data were collected on the lengths of all phone calls made by college students on cell phones during one month. Two measures of center (mean and median) for this distribution were identified as 2.5 minutes and 13.7 minutes. Which of the following is true? The mean is 2.5 minutes and the median is 13.7 minutes because the distribution of the lengths is phone calls is most likely left-skewed. The mean is 2.5 minutes and the median is 13.7 minutes because the distribution of the lengths is phone calls is most likely right-skewed. The median is 2.5 minutes and the mean is 13.7 minutes because the distribution of the lengths is phone calls is most likely left-skewed. The median is 2.5 minutes and the mean is 13.7 minutes because the distribution of the lengths is phone calls is most likely right-skewed.

Answer 1

8)

We know that, for a left-skewed distribution, the value of median is greater than that of mean.

Here, Median = 13.7 > Mean = 2.5, so the distribution is left-skewed.

Hence 1st option.

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