A disadvantage of using grouping (a frequency table)with sample data is that:
A)Calculations involving central tendency and variation are more complicated than central tendency and variation calculations based on ungrouped data.
B)The descriptive statistics are less precise than the descriptive statistics obtained using ungrouped data.
C)The interpretation of the grouped data descriptive statistics is meaningless.
D)It is much more difficult to summarize the information than it is with the ungrouped data.

Question

Quizplus · Accepted Answer

Grouping data can result in loss of information and make the descriptive statistics less precise than the descriptive statistics obtained using ungrouped data. When grouping data, we replace individual scores with interval categories, which can result in underestimating or overestimating the frequency of scores in a particular interval. As a result, the measures of central tendency and variation may also lose accuracy. Therefore, using a frequency table with sample data has the disadvantage of making the descriptive statistics less precise than when using ungrouped data.

A Disadvantage of Using Grouping (A Frequency Table)with Sample Data