Mathematics Homework Help
Mc Creary Central High School Statistics and Central Tendency Exercises
Review of Central Tendency and other topics
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Purpose: To reinforce student’s understanding and application of descriptive statistics, histograms, and skewness.
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1. Using the data below, answer the questions that follow
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4, 17, 9, 10, 3, 14, 13, 12, 15, 3, 8, 10, 4, 15, 14, 4, 19, 10, 11, 12, 15
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- Draw a histogram (be sure your axes are properly labeled).
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The first step to draw a histogram is to find the class boundaries, in this case due to the size of the data set, 5 classes will be enough.
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We start by finding the range which is:
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But to make it look nicer we will use a Range of 0 to 20 and 5 classes
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Now we can find the classes, we start with the min and we add the class size until we reach the max.
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|
Calculations |
Class |
Freq. |
|
0+4=4 |
0 to 4 |
2 |
|
4+4=8 |
4 to 8 |
3 |
|
8+4=12 |
8 to 12 |
6 |
|
12+4=16 |
12 to 16 |
8 |
|
16+4=20 |
16 to 20 |
2 |
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With this information we can plot the following graph.
