MEan, Median, Mode, Range, & Quartile Test

Front

What is the mean of a set of numbers?

Back

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

Front

What is the median in a data set?

Back

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

Front

What is mode in statistics?

Back

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

Front

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

Back

The range is calculated by subtracting the smallest number from the largest number in the set.

Front

What is a quartile?

Back

A quartile is a type of quantile that divides a data set into four equal parts, with each part representing a quarter of the data.

Front

What is the first quartile (Q1)?

Back

The first quartile (Q1) is the median of the lower half of the data set, which separates the lowest 25% of the data from the rest.

Front

What is the third quartile (Q3)?

Back

The third quartile (Q3) is the median of the upper half of the data set, which separates the highest 25% of the data from the rest.

Front

True or False: The median is always one of the values in the data set.

Back

False. The median may not be one of the original values, especially if the number of values is even.

Front

What is the formula to find the mean?

Back

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

Front

If the data set is 2, 3, 4, 5, 5, 5, 7, what is Q3?

Back

Q3 is 5.