Unit 8 Test ACC Study Guide
Test Date: Friday May 20, 2016
Topics:
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All Topics from Unit 1, Unit 2, Unit 3, Unit 4, Unit 5,
Unit 6, and Unit 7
Statistical Questions
Creating Line Plots, Frequency Tables and
Histograms
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Calculating Mean, Median, Mode
Describing Center, Variability and Shape
Box and Whisker Graphs
The Mean Absolute Deviation (MAD)
Circle Graphs
To study, you should complete odd numbered problems from the textbook so you can check in the back of the textbook. Selected
answers begin on Pg. SA1.
Vocabulary:
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All vocab from Units 1, 2, 3, 4, 5, 6 and 7
Histogram
Mean Absolute Deviation (MAD)
Relative Frequency
Cumulative Frequency
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Skewed Data
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Quartiles and Extremes
Measures of Center (mean, median, mode)
Measure of Variability (range, interquartile range, MAD)
Box and Whisker Graph
Practice: Be sure to include labels and title for all graphs and to show all work.
The following are 6th grade Math scores on the Unit 7 Test: 87, 93, 94, 72, 68, 75, 92, 89, 88, 89.
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Write a statistical question that you could ask to obtain the above data.
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Calculate the measure of center for the data (mean, median, and mode). Which measure or center best represents the
data? Explain fully.
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Calculate the measures of spread for the data (range and mean absolute deviation). Which measure of spread best
represents the data? Explain fully.
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Create a frequency table that includes cumulative and relative frequency for the data above.
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Create a histogram for the data above. Is the histogram approximately symmetrical or skewed? What does this tell you
about the data?
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Create a box-and-whisker plot for the data above. Include all work to calculate the medians and quartiles. What is the
interquartile range (IQR)?
The following table shows the results of a 6th grade poll.
Color
Number of Students
Blue
3
Red
12
Purple
6
Green
3
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Write a statistical question that you could ask to obtain the results above.
Create a circle graph of the data. Show all work.
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Create a line plot for the number of letters in a student’s name if 5 students participated, the mean was 9 letters, the mode
was 10, and the range was 8 letters.