Measures of Center and Spread and Comparing

Q1. What is the total number of students?

• 1) 136

• A) 150

• 2) 156

• C) 153

Quartiles are values that divide a data set into four equal parts.

• True

• False

• The minimum is 39

• The lower quartile is 44

• The median is 45

• The maximum is 51

• Peter received the same score three times in Week 1

• Peter had one very low score in Week 2

• Peter did not beat his high score from Week 1 in Week 2

• Peter has one very high score in Week 1

• The interquartile range of the temperatures is the same for both cities.

• The lower quartile for the temperatures in Macon is less than the lower quartile for the temperatures in Charlotte.

• The mean and median temperatures in Macon were higher than the mean and median temperatures in Charlotte.

• The upper quartile for the temperatures in Charlotte was less than the upper quartile for the temperatures in Macon.

• The freshmen averaged 1 more coat collected than the sophomores.

• The freshmen averaged the same number of coats collected as the sophomores.

• The sophomores averaged 1 more coat collected than the freshmen

• The sophomores averaged 3 more coats collected than the freshmen.

• Class 1

• Class 2

• Class 3

• Class 4

Which statement is true about the center of distribution?

• The center is best described using the mean, because the distribution is skewed.

• The center is best described using the median, because the distribution is skewed.

• The center is best described by the mean and median, because the distribution is symmetric.

• The center is best described by the outlier, because the distribution is symmetric.

Which group has a greater median reaction time?

• Group A

• Group B

• They're the same

Which of the following statements is true?

• The median shoes sold by Tim was 13 pairs.

• The median shoes sold by Caleb was 2 pairs more than Tim.

• The median shoes sold by Caleb was the same as the median sold by Tim.

• There is not enough information to compare the shoe sales for Caleb and Tim.