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Class 11 Economics (Statistics For Economics) Chapter 5 Measures Of Central Tendency Quiz 1 (25 MCQs)

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1. Find the mode of:12, 26, 4, 30, 2, 37, 26, 38
2. The scores in a basketball match are as follows:7, 13, 18, 24, 9, 3, 18If the team scored 18 points on their next game, how will this effect the mode of the scores?
3. What does the mode represent?
4. The median age of cars on a used car lot is 4 years. The interquartile range of the cars' ages is 5 years. Which statement is most likely true?
5. Which measure of central tendency is greatly affected by extreme scores?
6. The price of a cheese pizza in five different pizza delivery shops are 5, 5, 4, 6, 6, 8, and $ 7. Find the mean price of a cheese pizza.
7. What is the Q1 of this data set?6, 7, 2, 1, 5, 2, 1, 6
8. Quartiles
9. Find the median.5, 15, 10, 20, 15, 10, 15
10. The following are scores made on a math test:80, 90, 90, 85, 60, 70, 75, 85, 90, 60, 80 What is the mode of these scores?
11. Find the mean.18, 2, 0, 0, 0
12. The mean of 40 observations is 50. If two observations 45 and 55 are removed, the new mean is:
13. The most frequent value is called
14. Which is the number that appears the most often?
15. Which one would be the best to use:0, 0, 1, 1, 2, 3, 4, 5, 6, 8
16. The temperature received till Friday was 34, 38, 36, 30 and 31. If the temperature on Saturday drops to 11$^{o}$C, how does the inclusion of Saturday's temperature affect the weekly mean temperature?
17. Find the range of:23, 3, 14, 9, 30
18. The heights of six students in a class are given below:158cm 172cm 164cm164cm 167cm 159cm However, there were actually seven students in the class, and the mean height in the class was 165 cm. What was the height of the unknown student?
19. Look at these numbers-11, 11, 7, 18, 8. What is the correct way to put them in order so you can find the median?
20. What is the Mode? 22, 7, 22, 1, 7, 18, 18, 16, 6, 6, 7
21. The variance of a dataset is 16. If each observation of the dataset is doubled, what will be the new variance?
22. Calculate the mean of the following numbers:10, 15, 20, 25, 30
23. Mrs. Jones surveyed the class for the number of letters in their given first name. The data is recorded below.\{5, 8, 6, 5, 4, 9, 8, 7, 6, 3, 8, 7, 5, 6, 7, 8\}What is the interquartile range of the data?
24. What is the mode for the numbers 1, 1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 6, 7, 8, 8, 8, and 8?
25. What is the definition of the mean?
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