Mean, Median, Mode, MAD, and IQR

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 count of numbers.

Front

How do you find the median of a data set?

Back

To find the median, arrange the numbers in order and identify the middle number. If there are two middle numbers, add them together and divide by 2.

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 does MAD stand for in statistics?

Back

MAD stands for Mean Absolute Deviation, which measures the average distance between each data point and the mean.

Front

How do you calculate the mean of the numbers 4, 9, 7, 10, 5?

Back

Add the numbers: 4 + 9 + 7 + 10 + 5 = 35. Then divide by 5 (the count of numbers): 35 / 5 = 7.

Front

What is the mode of the numbers 1, 2, 2, 3, 7?

Back

The mode is 2, as it appears most frequently.

Front

What is the median of the numbers 3, 1, 2?

Back

Arrange the numbers: 1, 2, 3. The median is 2, the middle number.

Front

How do you find the mode of the data set 5, 7, 7, 8, 12, 12, 5, 6, 13, 12?

Back

The mode is 12, as it appears most frequently.

Front

What is the formula for calculating the Mean Absolute Deviation (MAD)?

Back

MAD = (Sum of |each data point - mean|) / (number of data points).

Front

What is the interquartile range (IQR)?

Back

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