3. Complete the following steps. a. Select a sample of size 100 from the standard normal distribution. b. Make a density histogram (with 10 bars/classes) for the sample. Add the graph of the density curve of the standard normal distribution. c. Draw a qqplot (with a line) for the sample (from part a). The horizontal axis should contain the theoretical percentiles of the standard normal distribution. d. Combine the plots (from b and c) in one plot. e. Describe the shape of the distribution of the sample and the shape of the qq plot. Does it appear that the points on the qqplot fall close to the line? If not, what shape do you observe?
3. Complete the following steps. a. Select a sample of size 100 from the standard normal distribution. b. Make a density histogram (with 10 bars/classes) for the sample. Add the graph of the density curve of the standard normal distribution. c. Draw a qqplot (with a line) for the sample (from part a). The horizontal axis should contain the theoretical percentiles of the standard normal distribution. d. Combine the plots (from b and c) in one plot. e. Describe the shape of the distribution of the sample and the shape of the qq plot. Does it appear that the points on the qqplot fall close to the line? If not, what shape do you observe?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:3. Complete the following steps.
a. Select a sample of size 100 from the standard normal distribution.
b. Make a density histogram (with 10 bars/classes) for the sample. Add the graph
of the density curve of the standard normal distribution.
c. Draw a qqplot (with a line) for the sample (from part a). The horizontal axis
should contain the theoretical percentiles of the standard normal distribution.
d. Combine the plots (from b and c) in one plot.
e.
Describe the shape of the distribution of the sample and the shape of the qq plot.
Does it appear that the points on the qqplot fall close to the line? If not, what
shape do you observe?
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