Purchase Solution

Measures of Central Tendency and Variability

Not what you're looking for?

Ask Custom Question

#1- Indicate and defend which measures of central tendency and variability you think is most appropriate for these data:

3,5,3,2,8,4,6,7,1,4,3,2

#2- Calculate the semi-interquartile range for these data and indicate which measure of central tendency and variability would provide the best description of these data:

24,16,22,22,24,22,18,22,20,18,20,22,20,22,18,16,20,24,24,18

#3. Calculate the semi-interquartile range for the dustribution and indicate which measure of central tendency and variability would provide the best description of these data:

Intersection speed(mph)
60-69
50-59
40-49
30-39
20-29
10-19
00-09

Number of Vehicles
38
30
26
22
30
38
22

Purchase this Solution

Solution Preview

#1- Indicate and defend which measures of central tendency and variability you think is most appropriate for these data:
3,5,3,2,8,4,6,7,1,4,3,2

Because the data is skewed (there are more numbers closer to the lower end than the higher end), so the median would be an appropriate measure of central tendency and the interquartile range would be the best measure of variability. If it was determined that the skewness was not too severe, you could choose the mean (average) and standard deviation.

#2- Calculate the semi-interquartile range for these data and indicate which measure of central tendency and ...

Purchase this Solution


Free BrainMass Quizzes
Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.