Arithmetic Mean
Weighted Mean
Median and Mode
Standard Deviation
z scores
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

Find the standard deviation of sample 6,6,8,10

What is 1.91

100

A set of 5000 scores on a college readiness exam are known to be normally distributed with a mean of 72 and standard deviation of 6. To the nearest integer value, how many scores are there between 63 and 75?

N=5000, µ=72, ơ = 6 Find the corresponding z values for x=63 and x=75. We get z=-1.5 and .5   62% of scores fall in the range     .62*5000= approx. 3123 scores

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

What is the standard deviation of sample travel times 39 21 9 32 30 45 11 12 39

What is 13.6

200

The mean score for a chapter test in a math class was 86 with a standard deviation of 5.  Find the probability that a test taker scored above a 70.  

What is 0.9993?

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

Find the standard deviation of all ages of members on a committee. 23,24,26

What is 1.25

300

Based on data from the National Health and Nutrition Examinations Survey, assume that weights of men are normally distributed with a mean of 172lb and a standard deviation of 29lb. Find the probability that a man will be greater than 180lbs.

38.97% or 39%

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

A set of numbers has a standard deviation of 0. What can be said about the data?

What is they are all the same.

400

As reported by the college board, the normally distributed mean reading score for the SAT is 503 with a standard deviation of 113.  Find the percent of SAT math scores that are greater than 500.  

What is 51.06%?

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

We can approximate the standard deviation of data where the minimum number is 24 and the maximum is 30 =

What is 1.5

500

The weight of adult male beagles are normally distributed, with a mean of 25 pounds and a standard deviation of 3 pounds.  Find the probability that the weight of a randomly selected male beagle is between 23 and 25 pounds.  

What is 0.2486?

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