Mean, Median, Mode, Box and Whisker

Front

What is the mean?

Back

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

Front

What is the median?

Back

The median is the middle value in a set of numbers when they 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 the mode?

Back

The mode is the number 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 number from the largest number in the data set.

Front

What is a box and whisker plot?

Back

A box and whisker plot is a graphical representation of a data set that shows the median, quartiles, and extremes (minimum and maximum values).

Front

What does it mean if a data set is skewed?

Back

A skewed data set is one where the values are not symmetrically distributed, meaning one tail is longer or fatter than the other.

Front

What is the first quartile (Q1)?

Back

The first quartile (Q1) is the median of the lower half of a data set, representing the 25th percentile.

Front

What is the third quartile (Q3)?

Back

The third quartile (Q3) is the median of the upper half of a data set, representing the 75th percentile.

Front

How do you determine if a number is an outlier?

Back

A number is considered an outlier if it is significantly higher or lower than the other numbers in the data set, often determined using the interquartile range (IQR).

Front

What is the interquartile range (IQR)?

Back

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