Standard deviation Quiz
10 questions · easy to harder · Statistics · score and step-by-step answers
How it works
- 10 questions, about 30 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 5 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
Population standard deviation of 4, 8, 6, 5, 7- A) SD ≈ 6
- B) SD ≈ 1.4
- C) SD ≈ 14
- D) SD ≈ 2
2 Question 2
Population standard deviation of 1, 3, 5, 7Type the answer.
3 Question 3
Population standard deviation of 2, 4, 4, 4, 5, 5, 7, 9- A) 2
- B) 5
- C) 4
4 Question 4
Sample standard deviation of 3, 5, 7, 9Type the answer.
5 Question 5
Sample standard deviation of 10, 12, 14- A) 2
- B) 85
- C) 12
- D) 8
6 Question 6
Sample standard deviation of 6, 9, 3, 7, 5Type the answer.
7 Question 7
Sample standard deviation of 1, 2, 3, 4, 5, 6, 7- A) SD ≈ 4
- B) SD ≈ 2.2
- C) SD ≈ 2
- D) SD ≈ 28
8 Question 8
Population standard deviation of 70, 85, 90, 75, 80Type the answer.
9 Question 9
Sample standard deviation of 0, 4, 8, 12- A) SD ≈ 4.5
- B) SD ≈ 5.2
- C) SD ≈ 6
- D) SD ≈ 80
10 Question 10
Sample standard deviation of 48, 52, 50, 46, 54Type the answer.