Question

In: Statistics and Probability

Problem from statistic The data below are from a 25-question test given to 20 students. The...

Problem from statistic

The data below are from a 25-question test given to 20 students. The values indicate the number of questions answered correctly in each test.

10 11 11 13 13

13 14 15 15 16

16 16 16 16 18

18 18 19 19 19

  1. Summarize the data by computing the frequency distribution and the percentage frequency distribution. Use the following class intervals (left end point convention):

Class

1

2

3

4

Class interval

10-13

13-15

15-17

17-20
  1. Draw a histogram to summarize the data. Compute the density (height) for each block. Use the class intervals from problem 1.
  2. Compute and interpret the mode.

Please use Cumulative Areas of the Standard Normal Distribution

Solutions

Expert Solution

Frequency Histogram:

Density:

Mean:

MEdian & Mode:

orchestra answered 2 years ago
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