Stats Part 1

Front

What is the MEDIAN?

Back

The median is the middle value of a data set when the numbers are arranged in order. If there is an even number of observations, the median is the average of the two middle numbers.

Front

How do you calculate the MEAN of a data set?

Back

To calculate the mean, add all the numbers in the data set together and then divide by the total number of values.

Front

What is the MEDIAN of the following numbers: 4, 2, 7, 4, 3?

Back

4

Front

What is the INTERQUARTILE RANGE (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the range of the middle 50% of the data.

Front

When discussing the spread of data, which measure is best used?

Back

Standard Deviation is best used to discuss the spread of data.

Front

What is the mode of a data set?

Back

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

Front

How do you find the range of a data set?

Back

The range is found by subtracting the smallest value from the largest value in the data set.

Front

What does a higher standard deviation indicate?

Back

A higher standard deviation indicates that the data points are spread out over a wider range of values.

Front

What is a quartile?

Back

A quartile is a type of quantile that divides a data set into four equal parts.

Front

What is the first quartile (Q1)?

Back

The first quartile (Q1) is the median of the lower half of the data set.