7.2 Center and Spread Lesson Check

Front

What measure of center is best to use when we have outliers?

Back

Median is the best measure of center to use when there are outliers, as it is not affected by extreme values.

Front

To find the average of a set of numbers, add up all the items and divide by...

Back

The number of items in the set.

Front

What are the 1st and 3rd quartiles of the data set: 2, 3, 3, 4, 5, 7, 8, 8, 8, 10, 10, 12?

Back

1st Quartile: 3.5, 3rd Quartile: 9.

Front

What does the Mean Absolute Deviation measure?

Back

The average distance between the data values and the mean.

Front

Interpret the Mean Absolute Deviation for the goals: 10, 9, 3, 8, 10 (Mean is 8).

Back

On average, the number of goals made deviates 2 goals from the mean of 8 goals.

Front

What is the definition of 'mean' in statistics?

Back

The mean is the sum of all data values divided by the number of values.

Front

What is the definition of 'median'?

Back

The median is the middle value in a data set when the numbers are arranged in order.

Front

What is the definition of 'mode'?

Back

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

Front

What is the range of a data set?

Back

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

Front

How do you calculate the standard deviation?

Back

Standard deviation is calculated by finding the square root of the variance, which measures the average squared deviation from the mean.