Measures of Central Tendency, Dispersion and Descriptive Statistics, statistics homework help
- Below is a set of data that represent weight in pounds for a particular sample:
110.00
117.00
120.00
118.00
104.00
100.00
107.00
115.00
115.00
115.00
114.00
100.00
117.00
115.00
103.00
105.00
110.00
115.00
250.00
275.00
- Calculate the mean, median and mode. Which measure of central tendency best describes this data and why? You may use Excel, SPSS, some other software program, or a hand calculator for this problem.
- Calculate the range, the interquartile range, the variance, and the standard deviation. What do these measures tell you about the “spread” of the data?
-
Why is it important to perform basic descriptive statistics prior to conducting inferential statistical tests?
