Center and Spread of Data

• symmetric, with outliers
• symmetric, with no outliers
• skewed to the left
• skewed to the right 

• the spread for Sophie's Cafe is greater than Red Brick Grill
• the spread for Red Brick Grill is greater than Sophie's Cafe
• both are symmetric
• the median prices are the same for both

• both sets of data have the same median
• Ander's center is at 6
• Marcus's center is at 7
• Ander's spread is greater than Marcus's

• the shapes of both plots are symmetrical
• the data spreads for both populations are the same
• Route 9 is skewed left
• Route 9 is skewed right

What is the formula to calculate the mean of a set of data?

• Mean = (Sum of all values) / (Number of values)

• Mean = (Sum of all values) + (Number of values)

• Mean = (Sum of all values) - (Number of values)

• Mean = (Sum of all values) * (Number of values)

Calculate the mean of the following numbers: 12, 15, 18, 20, 25

• Mean = (12 + 15 + 18 + 20 + 25) / 5 = 90 / 5 = 19

• Mean = (12 + 15 + 18 + 20 + 25) / 5 = 90 / 5 = 22

• Mean = (12 + 15 + 18 + 20 + 25) / 5 = 90 / 5 = 18

• Mean = (12 + 15 + 18 + 20 + 25) / 5 = 90 / 5 = 15

What is the median of the following set of numbers: 10, 15, 20, 25, 30, 35, 40?

• 30

• 45

• 25

• 20

Find the mode of the following set of numbers: 5, 8, 8, 10, 12, 12, 12, 15

• 15

• 12

• 10

• 8

What is the purpose of a box plot in statistics?

• The purpose of a box plot in statistics is to visually display the distribution, central tendency, and variability of a dataset.

• To show the correlation between two variables

• To display the frequency distribution of a dataset

• To calculate the mean and median of a dataset

Draw a box plot for the following set of data: 10, 15, 20, 25, 30, 35, 40, 45, 50

• Minimum = 5, Q1 = 15, Median = 25, Q3 = 35, Maximum = 45

• The box plot for the given data is as follows: Minimum = 10, Q1 = 20, Median = 30, Q3 = 40, Maximum = 50

• Minimum = 12, Q1 = 22, Median = 32, Q3 = 42, Maximum = 52

• Minimum = 18, Q1 = 28, Median = 38, Q3 = 48, Maximum = 58