| What to create | Quiz |
| Which subject | Mathematics |
| What age group | Year or Grade 9 |
| What topic | Mean |
| Question types | Open-ended |
| Number of questions | 15 |
| Number of answers | 4 |
| Correct answers | Exactly 1 |
| Show correct answers | |
| Use images (descriptions) | |
| Any other preferences |
Answer the following questions related to the concept of Mean. Each question is open-ended, and you must provide your answers clearly.
What is the mean of the following set of numbers: 4, 8, 6, 10, 12?
If the mean of the numbers 5, 15, 25, x, and 35 is 20, what is the value of x?
A student scores 70, 80, 90, and 100 in four tests. What is their average score?
The ages of four friends are 16, 17, 18, and 19. What is their mean age?
If the mean of the numbers 12, 15, y, and 21 is 17, what is the value of y?
A class's test scores are: 55, 65, 75, 85, and 95. What is the mean test score?
Find the mean of the following numbers: 14, 18, 22, 26, and 30.
If the mean of the sequence 2, 4, 6, 8, and z is 6, what is the value of z?
A basketball player scores the following points in five games: 20, 22, 18, 25, and 30. What is the player's average score per game?
What is the mean of these numbers: 3, 3, 6, 9, and 12?
A survey recorded the number of books read by 5 students as 1, 2, 3, 5, and x. If the mean is 3, what is the value of x?
The heights of five students in centimeters are: 150, 155, 160, 165, and 170. What is their mean height?
If the mean of the numbers 11, 13, 15, 17, and 19 is decreased by 1, what will be the new mean?
Calculate the mean of the following weights (in kg): 50, 55, 60, 65, and 70.
If the mean of the scores 30, 40, 50, and 60 is known to be 45, is it true that there is an error in the calculated mean? Explain.