Grade 7 - Quarter 3 - Statistics Quiz.pptx

Quiz in statistics

1. Quarter 4 QUIZ # 3 Math 7 Name: ____________________ Score: ________ /20 _______ Section: ____________________ Date: _ June 27, 2023 _____ Note: -3pts for students who did not write their name on their paper.

2. Direction: Choose only the letter of the correct answer. Notes: *keep your math notebook closed * -3pts if you caught cheating * cover your paper after you write your answer * score is recorded and graded and part of your 40% grade. *GOODLUCK!!!*

3. 1. It refers to the spread of data. A. measure of accuracy B. measure of variability C. measure of central tendency

4. 2. It is the simplest way to measure the variability. A. Range B. Average deviation C. Standard deviation

5. 3. The most reliable measure of variability A. Range B. Average deviation C. Standard deviation

6. 4. This measure tells us how far each data is from the mean. A. Range B. Average deviation C. Standard deviation

7. 5. It is the difference between highest and lowest score. A. Range B. Average deviation C. Standard deviation

8. 6. It is the square root of the variance. A. Range B. Average deviation C. Standard deviation

9. 7. What is the Range of the data set below: 10, 9, 7, 7, 8, 9, 6, 7, 8 A. 4 B. 5 C. 6

10. 8. Which of the following data set has a range of 10? A. 10, 12, 14, 16, 18 B. 10, 14, 18, 22, 26 C. 10, 14, 16, 18, 20

11. 9. Which data is more spread? A. Set A: 5, 8, 10, 9, 8, 7 B. Set B: 5, 6, 3, 8, 10, 7 C. Set C: 3, 5, 8, 8, 4, 7

12. 10. How to find the average deviation of the data below? Add 0,2,1,1 and 0 and divide by 4 B. Add 0,2,1,1 and 0 and divide by 5 C. Add 0,2,1,1 and 0 and divide by 6

13. 11. What is the average deviation of the data below? 0.8 B. 0.7 C. 0.6

14. 12. Which of the following is true about sample and population? Population is part of sample. B. Sample is part of population. C. Population and sample are two different people

15. 13. Which is the formula for finding the variance of population? Pic 1 B. Pic 2 C. Pic 3

16. 14. Which is the formula for finding the variance of sample? Pic 1 B. Pic 2 C. Pic 3

17. 15. Which is the formula for finding the standard deviation of population? Pic 1 B. Pic 2 C. Pic 3

18. 16. The steps below is for finding the ________ range B.variance C.standard deviation

19. 17. The steps below is for finding the ________ range B.variance C.standard deviation

20. 18. Find the Variance given the data: 10,15,25,10,12,18 28 B. 38 C.48

21. 19. If the computed variance of a set of data is 100, what is the standard deviation? 1 B. 10 C.100

22. 20. If the computed standard deviation of a set of data is 5, what is the variance? 10 B. 25 C. 50

23. The End Quietly Pass the paper in front of you.

24. Answer Key 1. B 6. C 11. A 16. B 2. A 7. A 12. B 17. C 3. C 8. C 13. A 18. A 4. B 9. B 14. B 19. B 5. A 10. B 15. C 20. B