Mean, Median, Mode, Range

Front

What is the definition of 'mean' in statistics?

Back

The mean is the average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Front

How do you calculate the 'median' of a set of numbers?

Back

To find the median, arrange the numbers in ascending order and identify the middle number. If there is an even number of observations, the median is the average of the two middle numbers.

Front

What is the 'mode' of a data set?

Back

The mode is the number that appears most frequently in a data set.

Front

How is 'range' defined in statistics?

Back

The range is the difference between the highest and lowest values in a data set.

Front

What is the formula to calculate the mean?

Back

Mean = (Sum of all values) / (Number of values)

Front

If a data set has the values 3, 7, 7, 2, 5, what is the mode?

Back

The mode is 7, as it appears most frequently.

Front

What is the median of the following set of numbers: 4, 1, 7, 3, 9?

Back

First, arrange the numbers in order: 1, 3, 4, 7, 9. The median is 4.

Front

In a data set of 10 numbers, how do you find the median?

Back

Arrange the numbers in ascending order. Since there are 10 numbers (even), the median is the average of the 5th and 6th numbers.

Front

What is the range of the following scores: 50, 60, 70, 80, 90?

Back

Range = Highest score - Lowest score = 90 - 50 = 40.

Front

If the scores are 10, 20, 20, 30, what is the mode?

Back

The mode is 20, as it appears most frequently.