Introduction to Statistics

What is the data type for numbers that we can count with?

1 , 10 , 19, 821

• Categorical Nominal

• Categorical Ordinal

• Numerical Continuous

• Numerical Discrete

Which one of these is an example of Categorical Ordinal data?

• strongly disagree, disagree, neutral, agree, strongly agree

• blonde, brown, black, red

• 1.6, 7.929, 102.85

What is the data type for hair color?

• Categorical Nominal

• Categorical Ordinal

• Numerical Discrete

• Numerical Continuous

Find the mean for the following data set:

Data Set: 12, 15, 18, 20, 22, 25, 25, 28, 30

• 22

• 25

• 21.6

• 23.5

Find the median for the following data set:

Data Set: 12, 15, 18, 20, 22, 25, 25, 28, 30

• 24

• 22

• 21.5

• 25

Find the mode for the following data set:

Data Set: 12, 15, 18, 20, 22, 25, 25, 28, 30

• 12

• 30

• 25

• 28

Find the mean for the following data set:

Data Set: 5, 7, 7, 10, 15, 15, 20, 25, 30, 35

• 15

• 30

• 16.9

• 17.8

Find the median for the following data set:

Data Set: 5, 7, 7, 10, 15, 15, 20, 25, 30, 35

• 18

• 19

• 16

• 15

Find the mode for the following data set:

Data Set: 5, 7, 7, 10, 15, 15, 20, 25, 30, 35

• 15

• 7

• 10

• 35

What is the population in this scenario?

A teacher observes how students spend their free time during recess. They record how many students choose different activities: playing sports, reading, or socializing. The teacher collects data on 150 students over a week.

• teacher

• students

• 150 students

• sports