Range, Mean, Median, and Mode

This video tutorial explains the concepts of range, mean, median, and mode in a data set. It begins with an introduction to the range, calculated as the difference between the greatest and least values. The mean is described as the average, found by adding all values and dividing by the number of values. The median is the middle value when data is ordered, and the mode is the most frequently occurring value. Examples using a line plot of student heights illustrate each concept. The video concludes with a recap of these statistical measures.

What is the range of a data set if the greatest value is 10 and the least value is 3?

• 13

• 3

• 10

• 7

How do you calculate the mean of a data set?

• Subtract the smallest value from the largest value

• Add all values and divide by the number of values

• Find the middle value in the ordered data

• Identify the most frequently occurring value

If a data set has values 2, 3, 3, 4, 5, what is the mean?

• 3.5

• 4

• 3

• 3.4

What is the median of the data set: 1, 3, 3, 6, 7, 8, 9?

• 3

• 5

• 7

• 6

In a data set, which value is considered the mode?

• The smallest value

• The average of all values

• The largest value

• The value that appears most frequently