Data Analysis Review
Which one
should I use !!!
Are you ready for the test !!!!!!
6th Grade
Graham Park Middle School
April 2013
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!!
Question 1
What is the mean of the following data set?
90, 85, 77, 52
Obj 6.15
Answer 1
What is the mean of the following data set?
52, 77, 85, 90 = 304
4
Mean = 76
Obj 6.10
Question 2
What is the median of the following data
set?
90, 85, 77, 52
Obj 6.15
Answer 2
What is the median of the following data
set?
77
+ 85
162/2 =
Obj 6.15
52, 77, 85, 90
81
Is the Median
Question 3
What is the mode of the following data
set?
66, 75, 43, 77, 85, 52, 75
Obj 6.9
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
Question 4
What is the range of the following data
set?
66, 75, 43, 77, 85, 52, 75
Obj 6.15
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
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
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
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
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
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
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
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
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
Question 9
Using the information from question 8,
what is the median?
Obj 6.15
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
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
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
80 * 2 = 160
80
-77
83 Is the Median
Obj 6.15
83 is the
missing
test score
Question 11
Using the chart about, what percentage
of doubles are included in the yearly
baseball batting summary?
Obj 6.14
Answer 11
Using the chart about,
What percentage of
doubles are included in
the yearly baseball
batting summary?
80 doubles
2
=
= 40%
200 total
5
Obj 6.14
Question 12
What category has the greatest use of
daily water usage?
Obj 6.14
Question 12
What category has
the greatest use of
daily water usage?
The washing machine has the greatest
use of daily water usage
Obj 6.14
Question 13
What category has the least use of daily
water usage?
Obj 6.14
Question 13
What category has
the least use of daily
water usage?
The dishwasher has the least use of
daily water usage
Obj 6.14
Question 14
What percentage of
campers enjoyed
canoeing as their
favorite activity?
Obj 6.14
Answer 14
Percentage of
campers who
enjoyed canoeing
was 25%
Obj 6.14
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
Answer 15
128 * 25% or
128 * .25 = 32
32 (of the 128) actual
enjoyed canoeing as
their favorite activity
Obj 6.14