ACT Averages, Mean, Median, & Mode

For the first 7 days of January, the daily low temperatures for Burlington were 20, 12, 9, 8, -8, -11, and -4 degrees Fahrenheit. What was the average temperature for those 7 days?

• -1 degree

• 0 degrees

• 1 degree

• 4 degrees

• 6 degrees

To determine a student's overall homework score for the semester, Mr. Daley drops the 2 lowest homework scores and takes the average of the remaining homework scores. Payton earned the following homework scores this semester: 85, 56, 67, 90, 95, 86, 0, 83, 100, and 88. What is the overall homework score that Payton earned in Mr. Daley's class this semester? Round your answer to the nearest tenth of a point.

• 69.4

• 77.1

• 86.8

• 88.0

• 99.1

Sydney earned 91, 93, 93, 94, and 96 points on the 5 essays - each out of a total of 100 points - given so far this semester. How many points must she earn on her sixth essay, which is also out of 100 points, to average 90 points for the six essays assigned this semester?

• 73

• 80

• 86

• 90

• 93

What is the mean of the following scores?

5, 93, 64, 45, 58, 13, 58

• 46

• 48

• 52

• 54

• 58

What is the average of 4, 4, and 5?

• 4

• 4 1/3

• 4 1/2

• 5

• 5 2/3

The stem and leaf plot shows the number of points a basketball player with the New Orleans Krewe scored in each of his 15 games. (hint: 20 points would have a stem value of 2 and a leaf value of 0) Which of the following is closest to the mean number of points the player scored per game?

• 4.7

• 15.0

• 15.8

• 20.0

• 20.7

George was absent for the last accounting test. For those who took the test, the mean was 75.8, the median was 74, and the mode was 81. When George took the test later, his score was different from all the other students' scores, and the class mean went up to exactly 76.6. What effect, if any, did George's score have on the class mode?

• None, the mode stayed the same.

• It decreased the mode exactly 0.8 points.

• It increased the mode exactly 0.8 points.

• It increased the mode more than 0.8 points.

• The effect of George's score on the mode cannot be determined from the given information.

What is the median of the following 9 numbers?

66, 29, 31, 49, 65, 13, 80, 13, 24

• 13

• 31

• 41.1

• 65

• 80

Julia started exercising August 1 because she wanted to prepare for volleyball season. For 7 days, she recorded the number of pushups she did each day in the table. What was the range of pushups Julia did during the first 7 days of August?

• 75

• 100

• 106

• 115

• 135

The table shows the scoring patterns of 4 different basketball players over the last 5 games. It gives the number of points each player scored in each game. Which player has the greatest range in points given in the table, and what is that range, in points?

• Player A: 16

• Player B: 21

• Player B: 25

• Player C: 23

• Player D: 19