Calculating the Interquartile Range (IQR)

What is the first step in calculating the interquartile range?

• Finding the mode of the dataset

• Calculating the range of the dataset

• Sorting the data from least to greatest

• Finding the mean of the dataset

How many data points are there in the given dataset?

• 10

• 9

• 8

• 7

What is the median of the dataset?

• 6

• 8

• 10

• 12

How do you find the first quartile (Q1) in a dataset with an even number of data points?

• By taking the average of the first and last data points

• By finding the median of the entire dataset

• By taking the average of the middle two numbers of the first half

• By finding the middle number of the first half of the dataset

What is the first quartile (Q1) of the given dataset?

• 4

• 5

• 6

• 7

How do you find the third quartile (Q3) in a dataset?

• By taking the average of the first and last data points

• By taking the average of the middle two numbers of the second half

• By finding the middle number of the second half of the dataset

• By finding the median of the entire dataset

What is the third quartile (Q3) of the given dataset?

• 12

• 14

• 13

• 11

How do you calculate the interquartile range (IQR)?

• By adding the first quartile (Q1) and the third quartile (Q3)

• By subtracting the first quartile (Q1) from the third quartile (Q3)

• By subtracting the median from the mean

• By finding the difference between the highest and lowest data points

What is the interquartile range (IQR) of the given dataset?

• 8

• 7

• 9

• 5

In the new dataset, what is the median?

• 9

• 12

• 11

• 10