SSAT Middle Level Math : Data Analysis and Probability

Study concepts, example questions & explanations for SSAT Middle Level Math

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Example Questions

Example Question #3 : Data Analysis

Give the mean of the following eight scores: 

Possible Answers:

Correct answer:

Explanation:

Divide the sum of the scores by eight:

Example Question #2 : Data Analysis

Give the mean of the following nine scores: 

Possible Answers:

Correct answer:

Explanation:

Divide the sum of the scores by nine:

Example Question #3 : Data Analysis

Give the median of the following eight scores: 

Possible Answers:

Correct answer:

Explanation:

Arrange the scores from least to greatest.

There are an even number (eight) of scores, so the median is the arithmetic mean of the middle two scores, 72 and 73. This makes the median

Example Question #6 : Data Analysis

The average age of 4 people is 12.  What will be the sum of their ages in 3 years?

Possible Answers:

Correct answer:

Explanation:

The current sum of their ages is .  Since all 4 people will gain 3 years in age, we have to add 12 to the current sum.

Example Question #3 : Mean

What is the mean of the values , , ,

Possible Answers:

Correct answer:

Explanation:

The mean of a set of values can be calculated by adding the values together and dividing by the number of values: 

Example Question #1 : How To Find Mean

On the first four exams, Charley scored 92, 88, 76, and 74. Charley wants to have a test average of 85%.  What must Charley score on the fifth exam to average 85%?

Possible Answers:

95%

90%

100%

85%

82%

Correct answer:

95%

Explanation:

The summation of the first four exams equals 330.  Using the equation for average, Charley needs to get a 95 on the last exam.

 

 

Example Question #4 : Data Analysis

Give the mean of the following data set:

Possible Answers:

Correct answer:

Explanation:

Since there are 16 elements, divide their sum by 16 to get the mean:

Example Question #21 : Data Analysis And Probability

Find the average of this set of numbers:

521, 834, 754, 902, 899

Possible Answers:

Correct answer:

Explanation:

First, add all the numbers in this set:

Divide, 3910 by the total amount of numbers in the set:

Answer: The average is 782.

Example Question #1 : Find Mean

Find the mean in this set of numbers:

5570, 4886, 5226, 4120, 6561, 4120, 6008

Possible Answers:

Correct answer:

Explanation:

First, add all the numbers in this set:

Then, divide that amount by the total number in the set:

 

Answer: The mean is 5213.

Example Question #1 : Mean

Adrienne is trying on dresses for prom. The dresses she likes each cost , ,  and , respectively. What is the average dress price that Adrienne is considering?

Possible Answers:

Correct answer:

Explanation:

First, add up all of the dress prices:

Then, divide by the number of dresses:

Answer: The average dress price is 

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