The first task is to sort the data into numerical order:

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Presentation transcript:

The first task is to sort the data into numerical order: 6 8 7 9 9 8 9 9 9 7 9 7 9 5 0 8 3 0 3 7 1 3 7 9 8 6 0 4 4 2 2 8 1 6 6 4 8 5 0 1 1 6 8 1 0 6 2 2 8 3 2 0 5 9 4 5 9 2 1 7 6 7 6 4 4 4 5 6 9 2 2 2 5 9 0 6 2 3 1 1 4 4 7 6 7 2 1 0 0 2 0 10 20 30 40 50 60 70 Key: 20 1 means 21 6 7 7 7 8 8 9 9 9 9 9 9 0 0 0 1 1 2 2 3 3 3 4 4 4 5 5 6 6 6 7 7 8 8 8 8 9 9 0 0 0 1 1 1 2 2 2 3 5 6 6 8 8 9 1 2 4 4 5 6 6 7 7 9 2 4 4 5 6 9 0 2 2 5 9 0 0 1 1 1 2 2 3 4 4 6 6 7 7 2 0 10 20 30 40 50 60 70 Key: 20 1 means 21

a) What is the age of the youngest cyclist in the survey? 6 7 7 7 8 8 9 9 9 9 9 9 0 0 0 1 1 2 2 3 3 3 4 4 4 5 5 6 6 6 7 7 8 8 8 8 9 9 0 0 0 1 1 1 2 2 2 3 5 6 6 8 8 9 1 2 4 4 5 6 6 7 7 9 2 4 4 5 6 9 0 2 2 5 9 0 0 1 1 1 2 2 3 4 4 6 6 7 7 2 0 10 20 30 40 50 60 70 Key: 20 1 means 21 a) What is the age of the youngest cyclist in the survey? The youngest cyclist in the survey is 6 years old.

a) What is the age of the youngest cyclist in the survey? 6 7 7 7 8 8 9 9 9 9 9 9 0 0 0 1 1 2 2 3 3 3 4 4 4 5 5 6 6 6 7 7 8 8 8 8 9 9 0 0 0 1 1 1 2 2 2 3 5 6 6 8 8 9 1 2 4 4 5 6 6 7 7 9 2 4 4 5 6 9 0 2 2 5 9 0 0 1 1 1 2 2 3 4 4 6 6 7 7 2 0 10 20 30 40 50 60 70 Key: 20 1 means 21 a) What is the age of the youngest cyclist in the survey? The youngest cyclist in the survey is 6 years old. b) What is the age of the oldest cyclist in the survey? The oldest cyclist in the survey is 72 years old.

a) What is the age of the youngest cyclist in the survey? 6 7 7 7 8 8 9 9 9 9 9 9 0 0 0 1 1 2 2 3 3 3 4 4 4 5 5 6 6 6 7 7 8 8 8 8 9 9 0 0 0 1 1 1 2 2 2 3 5 6 6 8 8 9 1 2 4 4 5 6 6 7 7 9 2 4 4 5 6 9 0 2 2 5 9 0 0 1 1 1 2 2 3 4 4 6 6 7 7 2 0 10 20 30 40 50 60 70 Key: 20 1 means 21 a) What is the age of the youngest cyclist in the survey? The youngest cyclist in the survey is 6 years old. b) What is the age of the oldest cyclist in the survey? The oldest cyclist in the survey is 72 years old. b) What is the modal age of the oldest cyclists? The modal age is 9, as there are 6 cyclists who are 9 years old.

Both the 45th and 46th value are 22 6 7 7 7 8 8 9 9 9 9 9 9 0 0 0 1 1 2 2 3 3 3 4 4 4 5 5 6 6 6 7 7 8 8 8 8 9 9 0 0 0 1 1 1 2 2 2 3 5 6 6 8 8 9 1 2 4 4 5 6 6 7 7 9 2 4 4 5 6 9 0 2 2 5 9 0 0 1 1 1 2 2 3 4 4 6 6 7 7 2 0 10 20 30 40 50 60 70 Key: 20 1 means 21 a) What is the age of the youngest cyclist in the survey? There are 90 pieces of data, so the median will be between the 45th and 46th value. The youngest cyclist in the survey is 6 years old. b) What is the age of the oldest cyclist in the survey? The oldest cyclist in the survey is 72 years old. c) What is the modal age of the cyclists? Both the 45th and 46th value are 22 The modal age is 9, as there are 6 cyclists who are 9 years old. d) What is the median age of the cyclists? The median age is 22.

a) What is the age of the youngest cyclist in the survey? 6 7 7 7 8 8 9 9 9 9 9 9 0 0 0 1 1 2 2 3 3 3 4 4 4 5 5 6 6 6 7 7 8 8 8 8 9 9 0 0 0 1 1 1 2 2 2 3 5 6 6 8 8 9 1 2 4 4 5 6 6 7 7 9 2 4 4 5 6 9 0 2 2 5 9 0 0 1 1 1 2 2 3 4 4 6 6 7 7 2 0 10 20 30 40 50 60 70 Key: 20 1 means 21 a) What is the age of the youngest cyclist in the survey? The youngest cyclist in the survey is 6 years old. b) What is the age of the oldest cyclist in the survey? The oldest cyclist in the survey is 72 years old. c) What is the modal age of the cyclists? The modal age is 9, as there are 6 cyclists who are 9 years old. d) What is the median age of the cyclists? The median age is 22.