Mean and Range Flashcard

Front

What is the mean of a data set?

Back

The mean is the average of all the numbers in a data set, calculated by adding all the values together and dividing by the number of values.

Front

How do you calculate the mean of the data set 3, 4, 6, 12, 5?

Back

Add the numbers: 3 + 4 + 6 + 12 + 5 = 30. Then divide by the number of values (5): 30 ÷ 5 = 6.

Front

What is the range of a data set?

Back

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

Front

How do you find the range of the data set 25, 16, 1, 8, 29?

Back

Identify the highest value (29) and the lowest value (1). Then subtract: 29 - 1 = 28.

Front

What is the range of the data set 2, 3, 10, 12, 8?

Back

The highest value is 12 and the lowest is 2. The range is 12 - 2 = 10.

Front

What is the formula for calculating the mean?

Back

Mean = (Sum of all values) ÷ (Number of values).

Front

If a data set has values 10, 12, 14, 28, what is the mean?

Back

Add the numbers: 10 + 12 + 14 + 28 = 64. Then divide by 4: 64 ÷ 4 = 16.

Front

What does it mean if the range of a data set is large?

Back

A large range indicates that there is a wide spread between the highest and lowest values.

Front

What does it mean if the range of a data set is small?

Back

A small range indicates that the values in the data set are close to each other.

Front

Can the mean be affected by extreme values?

Back

Yes, the mean can be significantly affected by very high or very low values, also known as outliers.