Statistics Quiz

What is the branch of statistics that organizes and presents data without inferring beyond the data?

• Inferential Statistics

• Descriptive Statistics

• Analytical Statistics

• Predictive Statistics

What is the symbol used to indicate summation in statistics?

• x̄ (X Bar)

• N (Population Size)

• μ (Mu)

• Σ (Sigma)

What is the mean of the following test scores: 92, 84, 65, 76, 88, 90?

• 78.5

• 80.0

• 85.5

• 82.5

In a ranked list of numbers, how is the median determined if the number of entries is even?

• It is the mean of the two middle numbers.

• It is the middle number.

• It is the highest number.

• It is the lowest number.

What is the mode of the following list: 18, 15, 21, 16, 15, 14, 15, 21?

• 18

• 16

• 15

• 21

What does the term 'population' refer to in statistics?

• A small group of data

• The entire group under consideration

• A sample of data

• The average of a dataset

What is the median of the following numbers: 4, 8, 1, 14, 9, 21, 12?

• 8

• 14

• 9

• 12

What is the mean height of the runners given their heights: 160 cm, 137 cm, 149 cm, 153 cm, 161 cm?

• 155 cm

• 152 cm

• 150 cm

• 158 cm

If no number occurs more than once in a dataset, what is the mode?

• The highest number

• The average of the numbers

• The lowest number

• There is no mode

What is the purpose of inferential statistics?

• To describe data

• To make predictions about a population

• To collect data

• To organize data