Scores Between 75 and 25 Were Reported for a Given

question 39

Multiple Choice

Scores between 75 and 25 were reported for a given data set of 30 scores. In this instance, the range would be calculated by _____.

• A) adding together 75 and 25
• B) adding together 75 and 25, then dividing by 30
• C) subtracting 25 from 75
• D) subtracting 25 from 75, then dividing by 30

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Definitions:

Mean

The arithmetic average of a set of numbers, calculated by dividing the sum of all the values by the count of numbers.

Range

The difference between the highest and lowest values in a set of numbers.

Normal Model

A probability distribution that is symmetrical about its average, indicating that occurrences close to the mean are more common than those further away.

Central 68%

Central 68% is a statistical term that refers to the percentage of data within one standard deviation of the mean in a normal distribution, implying that about 68% of the data fall within this range.