Statistics and Probability Review

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

• Sum of numbers divided by the total count of numbers

• Sum of numbers multiplied by the total count of numbers.

• Difference of numbers divided by the total count of numbers.

• Product of numbers divided by the total count of numbers.

Calculate the mean of the following set of numbers: 5, 8, 12, 15, 20.

• 18

• 12

• 10

• 25

What is the range of a data set?

• The range of a data set is the median value in the set.

• The range of a data set is the difference between the maximum and minimum values in the set.

• The range of a data set is the average of all the values in the set.

• The range of a data set is the sum of all the values in the set.

Calculate the range of the following data set: 10, 15, 20, 25, 30.

• 25

• 15

• 20

• 5

What is the probability of rolling a 6 on a fair six-sided die?

• 1/3

• 1/4

• 1/2

• 1/6

What is the formula to calculate the probability of an event?

• Total number of favorable outcomes / Total number of possible outcomes.

• Number of favorable outcomes / Number of unfavorable outcomes.

• Number of favorable outcomes / Total number of favorable outcomes.

• Number of favorable outcomes / Total number of possible outcomes

A bag contains 5 red marbles and 3 blue marbles. What is the probability of drawing a red marble?

• 5/8

• 1/8

• 2/8

• 3/8

What is the difference between experimental probability and theoretical probability?

• Experimental probability is based on actual observations and data, while theoretical probability is based on mathematical calculations.

• Experimental probability is more accurate than theoretical probability because it is based on actual data and observations.

• Experimental probability is calculated using mathematical formulas, while theoretical probability is based on real-life experiments.

• Experimental probability is based on random guesses and assumptions, while theoretical probability is based on actual observations and data.

If the probability of an event is 0.25, what is the odds in favor of the event occurring?

• 1/4

• 1/2

• 3/4

• 1/3

All teachers at Mundy's Mill High School were survey and 82% said they do schoolwork outside at home. Is this a parameter or statistic?

• Parameter

• Statistic