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Chapter 1: Q 107. (page 73)
If a distribution is skewed to the right with no outliers,
(a) mean median. (d) mean > median.
(b) mean median. (e) We can’t tell without examining the data.
(c) mean median.
The correct option is (d) mean median.
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Comparing AP scores The table below gives the distribution of grades earned by students taking the AP Calculus AB and AP Statistics exams in
(a) Make an appropriate graphical display to compare the grade distributions for AP Calculus AB and AP Statistics.
(b) Write a few sentences comparing the two distributions of exam grades.
Forty students took a statistics examination having a maximum of 50 points. The score distribution is given in the following stem-and-leaf plot:
The third quartile of the score distribution is equal to (a) 45. (b) 44. (c) 43. (d) 32. (e) 23.
The IQR Is the interquartile range a resistant measure of spread? Give an example of a small data set that supports your answer.
The National Survey of Adolescent Health interviewed several thousand teens (gradesto ). One question asked was “What do you think are the chances you will be married in the next ten years?” Here is a two-way table of the responses by gender:
What percent of those who thought they were almost certain to be married were female?
(a) About (c) About (e) About
(b) About (d) About
The Fathom dot plot displays data on the number of siblings reported by each student in a statistics class.
Describe the shape of the distribution.
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