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Arithmetic Mean
Weighted Mean
Median and Mode
Trimmed Mean and Outliers
Riddles
100
What is the arithmetic mean of the data set? 9, 3, 5, 7, 1
What is 5
100
Jennifer knits scarves that she sells for $25 each. She sold 3 scarves on the first day, 5 on the second day, and 10 on the third day. Calculate the mean number of money she made in those three days.
What is $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

Two fathers and two sons sat down to eat eggs for breakfast. They ate exactly three eggs, each person had an egg. The riddle is for you to explain how.

One of the 'fathers' is also a grandfather. Therefore the other father is both a son and a father to the grandson.

In other words, the one father is both a son and a father.

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
In her job as a barista at a coffee shop, Angela earned 3 tips of $2, 3 tips of $5, and 6 tips of $1. Calculate the mean tip.
What is $2.25.
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

How many squares are there? (Show image)

14?

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

All my pets but 2 are dogs.
All my pets but 2 are cats.
All my pets but 2 are parrots.

How many pets do I have?

3

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
Janice creates pottery that she sells at craft fairs around Winnipeg. At one craft fair, she sold 5 items for $15 each, 9 items for $7.50 each, and 6 items for $12.50 each. What is the mean cost per item Janice sold?
What is $10.88.
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

Show Image 2

87

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

Show Image 3

6