Measures of Central Tendency/B&W

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest. If there are two middle numbers, the median is the average of those two numbers.

Front

How do you find the mode of a data set?

Back

The mode is the number that appears most frequently in a data set. A data set may have one mode, more than one mode, or no mode at all.

Front

What is the mean of a data set?

Back

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

Front

What is the interquartile range (IQR)?

Back

The IQR is a measure of statistical dispersion, calculated as the difference between the third quartile (Q3) and the first quartile (Q1). It represents the range of the middle 50% of the data.

Front

How do you find the mean of the data set: 5, 11, 2, 12, 4, 2?

Back

Add all the numbers: 5 + 11 + 2 + 12 + 4 + 2 = 36. Then divide by the number of values (6): 36 / 6 = 6.

Front

What do you do if there are two middle numbers when finding the median?

Back

Find the mean of the two middle numbers.

Front

What is a data set?

Back

A data set is a collection of numbers or values that can be analyzed to find patterns or trends.

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 determine if a data set is skewed?

Back

A data set is skewed if the values are not symmetrically distributed around the mean. If the tail on one side is longer, it indicates skewness.

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 containing 25% of the data.