Data Handling & Square Roots
Q1. The arithmetic mean of 5, 10, 15, 20, 25 is
Correct Answer: C. 15
Q2. The mean of 12, 15, 18, 21 is
Correct Answer: C. 16.5
Q3. Median of 3, 5, 7, 9, 11 is
Correct Answer: B. 7
Q4. Mode of 2, 3, 3, 4, 5, 3, 6 is
Correct Answer: B. 3
Q5. Mean of first 5 natural numbers is
Correct Answer: C. 3
Q6. The mean of five numbers is 20. Their sum is
Correct Answer: C. 100
Q7. Median of 4, 6, 8, 10 is
Correct Answer: C. 7
Q8. A bar diagram represents data using
Correct Answer: B. rectangular bars
Q9. In a pie chart, the total of all central angles is
Correct Answer: D. 360°
Q10. The mean of four numbers is 14. If three of them are 10, 12 and 16, the fourth number is
Correct Answer: B. 18
Q11. The marks of 6 students are 70, 80, 90, 60, 75, 85. The mean is
Correct Answer: C. 76.67
Q12. In raw data 5, 5, 6, 7, 7, 7, 8, the frequency of 7 is
Correct Answer: C. 3
Q13. Mode of the data 1, 2, 2, 3, 4, 4, 4, 5 is
Correct Answer: C. 4
Q14. Median of 11, 13, 15, 17, 19, 21, 23 is
Correct Answer: B. 17
Q15. In a class of 30, 12 students play cricket. Central angle for cricket in pie chart is
Correct Answer: B. 144°
Q16. The most frequently occurring value in a data set is called
Correct Answer: C. mode
Q17. Mean of 8 observations is 25. Their total is
Correct Answer: C. 200
Q18. The middle value of an ordered data set is the
Correct Answer: C. median
Q19. A pictograph uses
Correct Answer: C. pictures or symbols
Q20. The runs scored by a batsman in 5 matches are 30, 40, 25, 50, 35. His mean score is
Correct Answer: D. 36
