JEE MATHS UNIT 13
QUIZ NO 1
TOTAL QUESTIONS = 20
1. The mean of the data 2, 4, 6, 8, 10 is
A. 5
B. 6
C. 7
D. 8
2. The variance of the data 3, 3, 3, 3, 3 is
A. 0
B. 1
C. 2
D. 3
3. If the standard deviation of a dataset is 5, then its variance is
A. 25
B. 10
C. 5
D. 15
4. The probability of getting a sum of 7 when two dice are rolled is
A. 1/6
B. 1/36
C. 5/36
D. 1/12
5. The mode of the data 2, 3, 3, 5, 7 is
A. 2
B. 3
C. 5
D. 7
6. If two events A and B are independent, then P(A ∩ B) is equal to
A. P(A)P(B)
B. P(A) + P(B)
C. P(A)/P(B)
D. P(A) - P(B)
7. The range of the dataset 4, 8, 6, 10, 12 is
A. 8
B. 6
C. 12
D. 4
8. The median of the data 3, 8, 7, 5, 10 is
A. 7
B. 6
C. 8
D. 5
9. The probability of selecting a red card from a standard deck of 52 cards is
A. 1/2
B. 1/4
C. 1/3
D. 1/13
10. The mean of the first 10 natural numbers is
A. 5.5
B. 5
C. 6
D. 4.5
11. If P(A) = 0.4, P(B) = 0.5, and P(A ∩ B) = 0.2, then P(A ∪ B) is
A. 0.7
B. 0.6
C. 0.8
D. 1.0
12. The standard deviation of the data 2, 4, 6, 8, 10 is
A. 2.83
B. 3.16
C. 4
D. 2
13. The number of ways of arranging the letters in the word "STATISTICS" is
A. 5040
B. 2520
C. 15120
D. 30240
14. The probability of getting at least one head in three coin tosses is
A. 7/8
B. 3/8
C. 1/2
D. 1/8
15. If two dice are rolled, the probability of getting the same number on both is
A. 1/6
B. 1/36
C. 1/12
D. 5/36
16. The mean of the squares of the first 5 natural numbers is
A. 11
B. 15
C. 13
D. 10
17. The probability of drawing a king or a queen from a deck of 52 cards is
A. 2/13
B. 1/13
C. 3/13
D. 4/13
18. If the data 5, 10, 15, 20, 25 has a variance of 50, then its standard deviation is
A. 5
B. 10
C. 7
D. sqrt(50)
19. The probability of selecting a prime number from the first 10 natural numbers is
A. 2/5
B. 3/5
C. 4/5
D. 1/2
20. The median of the dataset 4, 6, 8, 10, 12, 14 is
A. 8
B. 9
C. 10
D. 12
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