Question

For this question, any non-integer answers should be entered as decimals, rounded to the hundredths place.

Consider this data set.

25.5 26 18.2
15.3 28.5 27
20.7 20.2 26.1
18.2 21.4 17.9
24.3 22.6 19.6
The mean of the data set is , and the sample proportion of numbers less than the mean is %.

Answer 1

there are 15 items in the data set, so to find the mean, simply add up the values and divide the total by 15

then, for the sample proportion of numbers less than the mean, count how many items in the list are less than the mean, then divide by 15 and convert to a percentage