Mean, Median, Mode Review

What is the median of this data set?
20 , 1 , 7 , 19 , 11 , 19

• 11
• 15
• 19
• 20

Amy’s current grades for her assignments in math class are 85, 90, 95, and 80. What grade does she have to earn on her next assignment to attain an average of 90? 

• 88
• 90
• 95
• 100

What is the median of this data set?

3 , 17 , 17 , 11 , 8 , 13 , 5 , 18

• 11

• 12

• 13

• 17

Betsy has scored a 94, 80, 89, 91 and 90 on her math tests. What must Betsy score on her next test to have a mean of exactly 90? 

• 96
• 91
• 90
• 89

Christine’s test scores are 86, 94, 88, 75, and 94. What does Christine need to score on the next test to have a mean score of 85?

• 90

• 73

• 94

• 100

Terry scored 71, 80, and 86 on his first three history tests. What must Terry score on the fourth test to have a mean of exactly 80? 

• 80
• 83
• 85
• 88

Calculate the mean of Shelly's test scores if she has scored 75, 97, and 92 so far this semester.

• 92

• 88

• 132

• 123

Keith has earned a 75%, an 86%, and an 83% on his tests so far this grading period. He wants to have an 80% average. If each test is included equally in his average, what is the lowest score that Keith could earn on the next test and keep at least an 80% average? 

• 69
• 72
• 76
• 80

When you are trying to find the MEDIAN of a set of data and 2 numbers are left in the middle after putting them in order from least to greatest, what do you do?

• List both of the numbers as the Median.
• Add the two numbers together and divide by 2.
• Pick the one that you want.
• Subtract the two numbers.

What is the mode of the data?

• 74

• 82

• 80

• 83