Grade 10 Statistics Review

I measure the heights of all the people in grade 10

• Qualitative Data
• Quantitative Data - Discrete
• Quantitative Data - Continuous

I count the number of white cars that drive past the school during break time

• Quantitative Data - Discrete
• Qualitative Data
• Quantitative Data - Continuous

I record the colour of each t-shirt in my wardrobe

• Quantitative Data - Discrete
• Qualitative Data
• Quantitative Data - Continuous

Find the mean: 16, 12, 13, 11, 13, 14, 9, 15, 15, 12

• 13
• 12.5
• 13.5
• 12

Find the median: 16, 12, 13, 11, 13, 14, 9, 15, 15, 12

• 13
• 12
• 14
• 12.5

Find the mode: 16, 12, 13, 11, 13, 14, 9, 15, 15, 12

• 12, 13 and 15
• No mode
• 13
• 15

Find the IQR: 16, 12, 13, 11, 13, 14, 9, 15, 15, 12

• 3
• 4
• 2
• 3.5

Find the standard deviation: 16, 12, 13, 11, 13, 14, 9, 15, 15, 12

• 2.0
• 2.1
• 2.5
• 2.8

Which statement best describes the standard deviation:

• The average distance of each number in the data set from the mean
• How spread out it is
• The average average of each average in the average
• The standard deviation of each standard from the deviation

You have been given a frequency table of shoe sales at a shop. Mean =

• 40.6
• 40
• 39.5
• 39