Data Analysis Review

1. Javier’s score on a history test is equal to the upper quartile value of all the scores on the test. Based on this information, which statement about Javier’s score is most likely to be true?

• Javier’s score is 75.

• Javier’s score is the same as 75% of all the scores.

• Javier’s score is greater than 75 other scores.

• Javier’s score is greater than 75% of all the scores.

How many data points fall between 120 and 160 if there are 280 data points total?

• 280

• 140

• 40

• 200

The data display is for 40 data points. The median represents how many data points?

• 25

• 35

• 20

• 50

Nam owns a used car lot. He checked the odometers of the cars and recorded how far they had driven. The histogram displays the data. Based on the information shown in the bar graph, which value is most likely the difference between the number of cars that drove between 250 and 300 km and the number of cars that drove between 150 and 200 km.

• 4

• 6

• 2

• 3

Four baseball players recorded the number of days they practiced baseball each month for a year. Which stem-and-leaf plot has mode and median values that are equal?

• A

• B

• C

• D

A zookeeper created the following stem-and-leaf plot showing the number of tigers at each major zoo in the country. What is the median number of tigers found at a zoo?

• 26

• 25

• 22

• 21

There were 500 cookies sold at a bakery on Sunday. The pie chart shows the percentages of what cookies were sold. Based on the data, how many more peanut butter cookies would be sold than sugar if 1500 cookies were sold in a day.

• 75

• 225

• 150

• 375

Alexis asked 4 of her friends how many movies they watched during the summer. Alexis determined the following measures about the number of movies watched by her 4 friends.

Mean: 20

Median: 20

Range: 8

The 3 friends who watched the most movies over the summer watched 19, 21, and 24 movies. How many movies were watched by the fourth friend?

• 16

• 21

• 20

• 25

A teacher measures the time it takes for each student in class to complete a quiz. The first quartile value of the teacher’s data is 22 minutes. The third quartile value is 43 minutes. Which statement must be true?

• About 25% of the students completed the quiz in 43 minutes or less.

• About 50% of the students completed the quiz in 22 minutes or more.

• Exactly 25% of the students completed the quiz in more than 43 minutes.

• Exactly 50% of the students completed the quiz in 32 minutes or less.

The line graph below shows the daily earnings at a local diner. Estimate the average daily earnings the diner had for the week.

• $400

• $250

• $525

• $300