Show:
Arithmetic Mean
Weighted Mean
Median and Mode
Trimmed Mean and Outliers
Percentile Ranking
100
What is the arithmetic mean of the data set? 9, 3, 5, 7, 1
What is 5
100

Homework weight: 5% grade: 60

Midterm weight: 35% grade: 75

Project weight: 20% grade: 80

Speech: Weight 15% grade: 70

Final Exam weight: 25% grade: 62

71.25%

100
What is the median of the data set? 21, 11, 15, 7, 23, 12, 19
What is 15
100
Identify the outlier in the data set. 13, 7, 9, 11, 16, 12, 80, 18
What is 80
100
Calculate the percentile rank of the number 7 for the data set 5, 7, 15, 20, 35.
What is 20
200
What is the arithmetic mean of the data set, rounded to the nearest tenth? 13, 8, 11, 6, 5, 16, 20
What is 11.3
200

At a health club, 80% of the members are men and 20% of the members are women. If the average age of the men is 30 and the average age of the women is 40, what is the average age of all the members?

32

200
What is the mode of the data set? 2, 2, 3, 4, 7, 5, 6, 4
What is 2 and 4
200
Identify the outlier in the data set. 101, 89, 99, 108, 86, 128, 80, 118, 822, 85
What is 822
200
Calculate the percentile rank of the number 25 for the data set 5, 7, 15, 20, 25, 30, 35, 40.
What is 50
300
What is the arithmetic mean of the data set? -12, 8, 10, -6, -5, 6, 20
What is 3
300
Jeremy earned grades of 87%, 96%, 70%, 90%, on four tests in one term in his math class. What was his term mark if the first test was worth 10% of his final grade, the second and third were each worth 20% and the fourth test was worth 50%?
What is 86.9%
300
**DAILY DOUBLE** What is the mode of the data set? 21, 34, 50, 32, 48, 22, 56
What is no mode
300
What is the trimmed mean of the data set? 14, 12, 7, 11, 15, 19, 80, 13
What is 14
300
Amy has just completed a CPR course as part of her training to be a nurse. There were 155 people in the course. If 80 of the students scored lower than Amy in the course, what was her percentile rank?
What is 52.
400
Jeremy earned grades of 87%, 96%, 70%, 90%, and 73% on five tests in one term in his math class . If each test were worth the same percentage of his final grade, what would be his final grade?
What is 83.2
400

A class of 25 students took a science test. 10 students had an average (arithmetic mean) score of 80. The other students had an average score of 60. What is the average score of the whole class?

68

400
What is the median of the data set? 17, 9, 22, 33, 49, 35, 61, 55
What is 34
400
**DAILY DOUBLE** What is the trimmed mean of the data set? 65, 76, 90, 59, 67, 78, 10, 82, 83, 91
What is 75
400

Josh has just completed a mortgage brokerage course. There were 95 people in the course. If 50 of the students scored higher than Josh and 2 people got the same score as him, what was his percentile rank?

What is 46.

500
Cory has received the following grades this term: 75, 87, 90, 88, 79. If he wishes to earn an 85 average, what must he score on his final test?
What is 91
500
Jessica wrote three math tests worth 20% of her final grade. She got marks of 85%, 80%, and 91%. What mark must she get on the final exam (worth 40%) if she wants a final grade of 86%?
What is 87%
500
What is the median of the data set? 27, 25, 34, 47, 34, 40, 30, 43, 47, 35, 31, 44, 47, 24, 37
What is 35
500
What is the trimmed mean of the data set? -13, -10, 9, -11, 6, 0, 4, -53
What is -4
500
**DAILY DOUBLE** Christine participated in a survey of people's wages in her town. She learned that her wage was in the 60th percentile, and that 120 people were surveyed. How many people surveyed earn less than Christine?
What is 72.