181k views
5 votes
The two ways we can measure the SPREAD of a distribution:a. mean and quartilesb. median and standard deviationc. mean and mediand.quartiles and standard deviation

User SilverTear
by
6.2k points

1 Answer

6 votes

In statistics, there are ways of analyzing data and these include measures of "central tendency" and "measures of dispersion."

This question is focused on "measures of dispersion," that is, an analysis of how well the data set is being spread away from the centre. The centre is most commonly denoted as the mean (average), and the SPREAD is an analysis of how farther away the observed data is from the centre.

The Mean, Median and Mode are basically measures of "central tendency" and therefore, options A, B and C do not measure the SPREAD of a distribution.

The Quartiles and Standard deviation actually measure how well (either very close or very far) the data set move away from the distribution.

The Quartiles basically examine the data set from all four quarters of the entire set, the 1st, 2nd, 3rd and 4th quarters. This measure of spread measures how well the data is from the distribution depending on which quartile it falls. The Standard deviation measures how far the mean deviates (or drifts away) from the data set.

The correct answer therefore is option D.

User Eric Erhardt
by
6.0k points