Mean, Median, Mode Flashcard

Front

What is the mean of a data set?

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 find the median of a data set?

Back

To find the median, arrange the numbers in ascending order and identify the middle number. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the mode of a data set?

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, representing the range of the middle 50% of the data.

Front

How do you calculate the mean of the following numbers: 2, 4, 6, 8?

Back

Mean = (2 + 4 + 6 + 8) / 4 = 20 / 4 = 5.

Front

What is the median of the following data set: 3, 5, 7, 9, 11?

Back

Median = 7 (the middle number in the ordered list).

Front

If the mode of a data set is 5, what does that mean?

Back

It means that the number 5 appears more frequently than any other number in the data set.

Front

How do you find the IQR of the data set: 1, 3, 5, 7, 9, 11?

Back

First, find Q1 (3) and Q3 (9). IQR = Q3 - Q1 = 9 - 3 = 6.

Front

What is the mean of the following numbers: 0, 2, 4, 6?

Back

Mean = (0 + 2 + 4 + 6) / 4 = 12 / 4 = 3.

Front

What is the median of the following numbers: 10, 20, 30, 40, 50, 60?

Back

Median = (30 + 40) / 2 = 35 (average of the two middle numbers).