Exploring Measures of Central Tendency

What statistical measures will you learn to calculate in this lesson?

• Mean, Median, Mode, Range

• Standard Deviation, Variance

• Algebraic Expressions, Equations

• Probability, Permutations

What is the first step in calculating the mean of a dataset?

• Add all the numbers together

• Order the data

• Subtract the smallest value

• Identify the most frequent number

What is the mean of the dataset 24, 22, 23, 26, 15?

• 22

• 24

• 20

• 23

How do you find the median if the dataset has an even number of entries?

• Average the two middle numbers

• Pick any middle number

• Reorder the dataset

• Choose the larger middle number

Which measure of central tendency is described as the middle value of a dataset?

• Range

• Mode

• Median

• Mean

If the dataset is ordered as 15, 22, 23, 24, 26, what is the median?

• 25

• 24

• 23

• 22

What should you write if there is no mode in the dataset?

• No mode

• Undefined

• Zero

• Error

If a dataset has the numbers 15 and 17 appearing most frequently, what are the modes?

• No mode

• Both 15 and 17

• 17

• 15

How is the range of a dataset calculated?

• Divide the largest number by the smallest

• Subtract the smallest number from the largest

• Subtract the mean from the median

• Add the largest and smallest numbers

What is the range of the dataset 15, 22, 23, 24, 26?

• 9

• 10

• 12

• 11