INTRO.STATISTICS,TECH.UPDT.-W/MYSTATLAB
10th Edition
ISBN: 9780135230008
Author: WEISS
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 1RP
Define
- a. descriptive measures.
- b. measures of center.
- c. measures of variation.
a.
Expert Solution
To determine
Define descriptive measures.
Explanation of Solution
Descriptive measures:
The measure that deals with quantitative data is known as descriptive measures. They are mean, median, and mode and so on. The mean of a data is average of numerical values. The mode is the observation that occurs most frequently. But mode is not a good measure of centre. Median of the data is the middle value of the data when it is arranged in increasing order.
b.
Expert Solution
To determine
Define measures of centre.
Explanation of Solution
Measures of centre:
The measures of centre or measures of central tendency are those descriptive measures that gives the centre or most typical value of a data set. The centre of a distribution indicates, where the most of the values in that distribution lies. Thus, using measure of central tendency one can explain a distribution very well.
Most commonly used measure of central tendencies are mean, median and mode.
c.
Expert Solution
To determine
Define measures of variation.
Explanation of Solution
Measures of variation:
The measures of variation gives the degree to which the observations in the data are differ to each other. That is, these measures give the amount of variation in the data. The commonly used measures of variation are range, standard deviation etc.
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Chapter 3 Solutions
INTRO.STATISTICS,TECH.UPDT.-W/MYSTATLAB
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