CBSE Class 9 Maths Chapter 14 Statistics MCQ
CBSE CLASS 9 MATHEMATICS / MCQ
Multiple Choice Questions / STATISTICS – Chapter 14
1. Facts or figures collected with a definite purpose are called————–
A. Data
B. Sample
C. Information
2. The area of study dealing with the presentation, analysis and interpretation of data is ——————-
A. Probability
B. Statistics
C. Mensuration
3. The midpoints of the class intervals are ————-
A. Class width
B. Class marks
C. Frequency
4. The ———- of a number of observations is the sum of the values of all the observations divided by the total number of observations.
A. Mean
B. Median
C. Mode
5. The ——— is that value of the given number of observations which divides it into exactly two parts.
A. Mean
B. Median
C. Mode
6. The value of the observation which occurs most frequency is ————-
A. Mean
B. Median
C. Mode
7. The mode of the following marks (out of 10) obtained by 10 students is ————-
5, 4, 9, 10, 10, 3, 4, 9, 7, 9
A. 4
B. 10
C. 9
8. In a continuous frequency distribution class mark of a class is 55 and upper limit is 57, then its lower limit is ————–
A. 53
B. 55
C. 57
9. If the mean of 5, 7, 8, 10 and x is 9, then the value of x is —————
A. 12
B. 15
C. 18
10. The mean of first five natural numbers is ————–
A. 2
B. 3
C. 4
11. The median of first five prime numbers is ———–
A. 3
B. 5
C. 7
12. Which of the following is not a measure of central tendency?
A. Mean
B. Mode
C. Standard Deviation
13. The scores (out of 50) of 9 students of a class are as follows:
49, 45, 37, 43, 42, 40, 49, 41, 29.
The median of this data is ————-
A. 41
B. 42
C. 43
14. The range of the following data
98, 29, 84, 45, 17, 20 is —————
A. 81
B. 3
C. 14
15. If the arithmetic mean of x, x+2, x+5, x+9 and x + 10 is 10, then x is ———–
A. 5
B. 7
C. 9
ANSWERS:
1. Data
2. Statistics
3. Class marks
4. Mean
5. Median
6. Mode
7. 9 (9 occurs most frequently)
8. 53
Explanation: (x + 57)/2 = 55
x + 57 = 2 x 55 = 110
x = 110 – 57 = 53
9. 15
Explanation: (5 + 7 + 8 + 10 + x) / 5 = 9
30 + x = 45
x = 45 – 30 = 15
10. 3
Explanation: (1 + 2 + 3 + 4+ 5)/5 = 15/5 = 3
11. 5
12. Standard Deviation
13. 42
14. 81 (Range = Highest value – Lowest value = 98 – 17 = 81)
15. 5
Explanation: (x + x + 2 + x + 5 + x + 8 + x + 10)/5= 10
5x + 25 = 50
5x = 50 – 25 = 25
x = 25 / 5 = 5
