Measures of Central Tendency

This video tutorial covers the concepts of mean, mode, median, and range, explaining how they are used to summarize data. It provides examples of calculating these averages and measures of spread, including working with data not in ascending order. The tutorial also demonstrates how to find unknown numbers given specific averages.

What is the primary purpose of calculating an average in a data set?

• To calculate the total sum

• To identify the lowest value

• To determine a typical value

• To find the highest value

Which of the following is NOT a type of average?

• Mode

• Range

• Mean

• Median

What is the mode of the data set: 2, 3, 3, 4, 9?

• 9

• 4

• 3

• 2

In a list of colors: red, green, green, green, blue, what is the mode?

• Red

• Green

• Blue

• There is no mode

How do you find the median in a data set?

• Identify the most common value

• Subtract the smallest value from the largest

• Find the middle value in an ordered list

• Calculate the average of all values

What is the median of the data set: 2, 3, 3, 4, 9?

• 4

• 2

• 9

• 3

How is the mean calculated?

• By identifying the middle value

• By subtracting the smallest value from the largest

• By adding all values and dividing by the number of values

• By finding the most common value

What is the mean of the data set: 2, 3, 3, 4, 9?

• 4.2

• 5

• 6

• 3

What does the range of a data set represent?

• The most common value

• The middle value

• The sum of all values

• The difference between the largest and smallest values

Calculate the range of the data set: 2, 3, 3, 4, 9.

• 6

• 8

• 5

• 7