Measures of the Spread of the Data · Example 2
Use the following data (first exam scores) from Susan Dean's spring precalculus class:
33, 42, 49, 49, 53, 55, 55, 61, 63, 67, 68, 68, 69, 69, 72, 73, 74, 78, 80, 83, 88, 88, 88, 90, 92, 94, 94, 94, 94, 96, 100
(a) Create a chart containing the data, frequencies, relative frequencies, and cumulative relative frequencies to three decimal places.
(b) Calculate the following to one decimal place using a TI-83+ or TI-84 calculator:
(a) The sample mean
(b) The sample standard deviation
(c) The median
(d) The first quartile
(e) The third quartile
(f) IQR
(c) Construct a box plot and a histogram on the same set of axes. Make comments about the box plot, the histogram, and the chart.
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OpenStax, Statistics · §2.7 Measures of the Spread of the Data · Example 2
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