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Data Analysis Review
Are you ready for the test !!!!!!
6th GradeGraham Park Middle School
April 2013
Which one should I use !!!
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Rules for review• Use a white board (or piece of paper ) to
work out the problems and display your answer
• Show work when required
• Circle your answer
• Each slide will have one question followed by the answer
• Let’s begin!!
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Question 1
What is the mean of the following data set?
90, 85, 77, 52
Obj 6.15
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Answer 1
What is the mean of the following data set?
52, 77, 85, 90 = 304 4
Mean = 76
Obj 6.10
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Question 2
What is the median of the following data set?
90, 85, 77, 52
Obj 6.15
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Answer 2
What is the median of the following data set?
Obj 6.15
52, 77, 85, 90 77+ 85 162/2 =
81Is the Median
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Question 3
What is the mode of the following data set?
66, 75, 43, 77, 85, 52, 75
Obj 6.9
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Answer 3
What is the mode of the following data set?
43, 66, 52, 75, 75, 77, 85
The mode is 75
Obj 6.15
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Question 4
What is the range of the following data set?
66, 75, 43, 77, 85, 52, 75
Obj 6.15
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Answer 4
What is the range of the following data set?
43, 66, 52, 75, 75, 77, 85
85 - 43 = 42
Range = 42
Obj 6.15
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Question 5
What is the best measure to use - Mean, Median or the Mode?
You take a survey of the shoe sizes in class.
Obj 6.15
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Answer 5
What is the best measure to use - Mean, Median or the Mode?
You take a survey of the shoe sizes in class. - A collection of similar data -
Mode
Obj 6.15
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Question 6
What is the best measure to use - Mean, Median or the Mode?
The President of US has a salary of $400,000. The members of Congress have a salary that range from $174,000 to $193,000 for the Majority and Minority leaders.
Obj 6.15
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Answer 6
What is the best measure to use - Mean, Median or the Mode?
The President of US has a salary of $400,000. The members of Congress have a salary that range from $174,000 to $193,000 for the Majority and Minority leaders.
Median is the best measure of data since the President’s salary is an outlier compared to the other salaries.
Obj 6.15
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Question 7
What is the best measure to use - Mean, Median or the Mode?
You take a survey of a 6th, 7th and 8th class to determine the average age.
Obj 6.15
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Question 7
What is the best measure to use - Mean, Median or the Mode?
You take a survey of a 6th, 7th and 8th class to determine the average age.
Mean works best for this set of data with no very high or very low numbers.
Obj 6.15
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Question 8
In question 1, we determined the mean of the following data set?
52, 77, 85, 90 - Mean = 76
This student wants to raise their average to 80%. What is minimum score they need to achieve on the next test?
Obj 6.15
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Answer 8
52, 77, 85, 90 - Mean = 76
5 tests x 80 = 400 total points
4 tests already completed = 304 points
Next test must equal 96% to raise the average from 76% to 80%
Obj 6.15
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Question 9
Using the information from question 8, what is the median?
Obj 6.15
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Answer 9
Using the information from question 8, what is the median?
52, 77, 85, 90, 96
85 is the new median
Obj 6.15
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Question 10
I have completed 4 tests; however, I only remember the scores for 3 of the test - 77, 52, 85. I remember that the median scores of my tests was 80. What is the score of the missing test score?
Obj 6.15
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Question 10
I have completed 4 tests; however, I only remember the scores for 3 of the test - 52, 77, 85. I remember that the median scores of my tests was 80. What is the score of the missing test score?
52, 77, x, 85
Obj 6.15
80Is the Median
80 * 2 = 160 -77 83
83 is the missing
test score
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Question 11
Using the chart about, what percentage of doubles are included in the yearly baseball batting summary?
Obj 6.14
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Answer 11
Using the chart about, What percentage of doubles are included in the yearly baseball batting summary?
Obj 6.14
80 doubles200 total
= 2 5
40%=
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Question 12
What category has the greatest use of daily water usage?
Obj 6.14
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Question 12
Obj 6.14
What category has the greatest use of daily water usage?
The washing machine has the greatest use of daily water usage
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Question 13
What category has the least use of daily water usage?
Obj 6.14
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Question 13
Obj 6.14
What category has the least use of daily water usage?
The dishwasher has the least use of daily water usage
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Question 14
What percentage of campers enjoyed canoeing as their favorite activity?
Obj 6.14
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Answer 14
Percentage of campers who
enjoyed canoeing was 25%
Obj 6.14
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Question 15
If the total # of campers was 128 and % canoeing = 25% what was the # who enjoyed canoeing as their favorite activity?
Obj 6.14
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Answer 15
128 * 25% or
128 * .25 = 32
32 (of the 128) actual enjoyed canoeing as their favorite activity
Obj 6.14