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Statistics & Probability Quizzes, Questions & Answers

Recent Statistics & Probability Quizzes

Business Mathematics & Statistics #5

Questions: 25 | Attempts: 267 | Last updated: Oct 16, 2025

Sample Question
If the price of an English novel decreases from Rs 255.50 to Rs 230.25. What is the percentage decrease?

8.9 %

9.9 %

10.9%

11.9 %

Business Mathematics & Statistics #4

Questions: 15 | Attempts: 722 | Last updated: Oct 22, 2025

Sample Question
Store A marked down a $ 50 perfume to $ 40 with markdown of $10 The % Markdown is:

10%

20%

30%

40%

Statistics and Quantitative Methods! Trivia Quiz

Questions: 20 | Attempts: 4718 | Last updated: Mar 22, 2025

Sample Question
Which of the following statements about statistics is not correct?

Statistics is sometimes misused by statisticians.

Statistics has hardly any limitations.

Statistics is indispensable in the management of business enterprises.

Statistics is of two types: descriptive and inferential.

Probability Sample Test

Questions: 61 | Attempts: 2457 | Last updated: Mar 21, 2025

Sample Question
AN event has probability 1.0. Which one of the following statements best describes this event in along sequence of trials?

This event is certain. It will definitely occur on every trial.

This event is extremely likely and will occur almost all the time.

This event is likely and will occur more often than not in the long run.

This event is likely; however it is more likely to NOT occur than to occur.

This event is very unlikely, but it will occur once in a while.

Lesson 4 & 5 Quiz - Possibility Diagrams & Tree Diagrams

Questions: 13 | Attempts: 436 | Last updated: Mar 21, 2025

Sample Question
X = {3, 4, 5, 6} and Y = {7, 8, 9, 10}. An element x is selected randomly from X and an element y is selected from Y. The value of x + y is then recorded.What is the probability that x + y is odd?

1 / 8

1 / 6

1 / 4

1 / 2

Probability and Odds Quiz Questions

Questions: 10 | Attempts: 1817 | Last updated: Jan 20, 2025

Sample Question
For questions 1-6 please use the following information: There are 20 marbles in a bag, 4 blue, 4 green, 4 red, 4 white and 4 black. Remember that all fraction answers should be given in the simplest form.What is the probability of drawing a blue marble?

1/20

4/20

4/5

1/5

Probability Tester

Questions: 11 | Attempts: 286 | Last updated: Mar 21, 2025

Sample Question
Suppose E is an event in a sample space S with probability .3. What is the probability of the complement of E?

1

.3

.7

0

Could You Pass This Hardest Inference Procedures Exam?

Questions: 10 | Attempts: 439 | Last updated: Mar 18, 2025

Sample Question
You are given x-bar(1)and x-bar(2),s(1), s(2), n(1), n(2) from two independent samples and you want an estimate of the difference between the two population means.

1 sample t-confidence interval for the mean

2 sample t-confidence interval for the difference of means

1 proportion confidence interval

2 sample hypotheses t-test for the difference of means

Paired t-test

Test Your Knowledge On Inferences and Proportions Quiz!

Questions: 10 | Attempts: 281 | Last updated: Oct 16, 2025

Sample Question
Which of these is NOT one of the conditions that must be checked for one-proportion hypothesis tests?

The products np and n(1-p) are greater than or equal to 10.

The alpha must be 0.05.

The data are from a SRS of independent observations

The population is at least 10 times as large as the sample

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