IQR and outliers 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
Outliers in 2, 15, 17, 18, 20, 21, 23, 45- A) 2
- B) 45
- C) 2 and 45
2 Question 2
Outliers in 10, 12, 13, 14, 15, 16, 40Type the answer.
3 Question 3
Outliers in 4, 5, 6, 6, 7, 8, 20- A) 0.5
- B) 3
- C) 4.5
- D) 20
4 Question 4
Outliers in 30, 31, 33, 34, 35, 37, 60Type the answer.
5 Question 5
Outliers in 1, 30, 32, 33, 35, 36, 38, 40, 70- A) 70
- B) 1
- C) 1 and 70
6 Question 6
Outliers in 8, 9, 10, 10, 11, 12, 13, 2Type the answer.
7 Question 7
Outliers in 20, 22, 23, 25, 26, 28, 29, 31- A) Yes
- B) No
8 Question 8
Outliers in 60, 72, 74, 75, 77, 78, 80, 82, 100Type the answer.
9 Question 9
Outliers in 7, 21, 23, 24, 25, 27, 28, 29, 31, 50- A) 7
- B) 50
- C) 7 and 50
10 Question 10
Outliers in 0, 10, 11, 12, 13, 14, 15, 16, 30Type the answer.