Basic Statistics Review for Flex

Front

What is the 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 total count of numbers.

Front

How do you calculate the mean of a set of numbers?

Back

Add all the numbers together and divide by the total number of values.

Front

What is the median in statistics?

Back

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

Front

How do you find the median of a set of numbers?

Back

Arrange the numbers in order and find the middle value. If there is an even number of values, average the two middle numbers.

Front

What is the mode in statistics?

Back

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

Front

What is the interquartile range (IQR)?

Back

The interquartile range is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

How do you calculate the interquartile range?

Back

Subtract the first quartile (Q1) from the third quartile (Q3).

Front

What does it mean if a graph is skewed left?

Back

A left-skewed graph has a longer tail on the left side, indicating that most values are concentrated on the right.

Front

What does it mean if a graph is skewed right?

Back

A right-skewed graph has a longer tail on the right side, indicating that most values are concentrated on the left.

Front

What is a symmetrical graph?

Back

A symmetrical graph has equal tails on both sides, indicating that the data is evenly distributed around the mean.