Research on ways to improve performance


Discuss the below:

Q1.  The Degree of Reading Power (DRP) test is often used to measure the reading ability of children. Here are the DRP scores of 44 third-grade students, measured during research on ways to improve reading performance:

40, 26, 39, 14, 42, 18, 25, 43, 46, 27, 19, 47, 19, 26, 35, 34, 15, 44, 40, 38, 31, 46, 52, 25, 35, 35, 33, 29, 34, 41, 49, 28 52, 47, 35, 48, 22, 33, 41, 51, 14, 54, 45.

Make a histogram using Microsoft Excel. Then do a stemplot. Which graph would you prefer and why? Describe the main features of the distribution.

Q2.  Here's the distribution of marital status for all Americans age 18 and over:

Marital Status

Count (millions)

Percent

Never married

43.9

22.9

Married

116.7

60.9

Widowed

13.4

7.0

Divorced

17.6

9.2

a. Make a bar graph of the given data set.

b. Make a pie chart of the given data set.

c. Compare both graphs and interpret your result

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Basic Statistics: Research on ways to improve performance
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