Social Statistics

SELECT ALL THAT APPLY. According to the textbook, the interquartile range is a measure of variability for ______. nominal variables nominal, ordinal, and interval-ratio variables interval-ratio variables ordinal variables

interval-ratio variables ordinal variables

Consider the following hypothetical scores: 21, 25, 37, 38, 39, 42, 44, 45. Which value is closest to the variance?

77.125

Consider the following hypothetical scores: 21, 25, 37, 38, 39, 42, 44, 45. What is the value of the interquartile range?

15.5

Calculate the values of the mean for the following subsample: 11, 35, 87, 72, 90, 22, 83, 1, 4.

45

Calculate the value of the mean for the following subsample: 22, 87, 65, 49, 34, 41, 55, 22.

46.875

Match the measure of variability with its relative strengths and weaknesses

IQV - strength = only measure we have for nominal-level variables; weakness = rarely used in practice standard deviation- strength = it calculates the deviation of each score from the mean, using all scores provided; weakness = elaborate and time-consuming calculation range - strength = easy calculation; weakness = it only uses two points from all the scores, doesn't account for the variation of the rest of the scores

IQV is based on the ratio of the total number of ranges in the distribution to the maximum number of possible differences within the same distribution.

False

The normal distribution is a theoretical distribution.

True

The quantities that are needed to calculate IQV are: the number of categories and the sum of all the squared percentages in the distribution.

True

The range must be based on more than one score.

True

Need help with your school assignments ? check out https://schoolworkplug.com/ at affordable rates

https://schoolworkplug.com/