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STATISTICS & PROBABILITY SUNDAY 07/02/2021

Beschreibung

10th grade Mathematics Quiz am STATISTICS & PROBABILITY SUNDAY 07/02/2021, erstellt von Satish Thakur am 06/02/2021.
Satish Thakur
Quiz von Satish Thakur, aktualisiert more than 1 year ago
Satish Thakur
Erstellt von Satish Thakur vor etwa 3 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
The percentage of marks obtained by 100 students in an examination are as follows: Marks 130-135 135-140 140-145 145-150 150-155 155-160 160-165 Frequency 14 16 18 23 18 8 3 The cumulative frequency of the class interval 140 - 145 is
Antworten
  • 40
  • 48
  • 52
  • 50

Frage 2

Frage
In the given data if n = 44, l = 400, cf = 8, h = 100, f = 20, then its median is
Antworten
  • 470
  • 460
  • 480
  • 400

Frage 3

Frage
The wickets taken by a bowler in 10 cricket matches are 2, 6, 4, 5, 0, 3, 1, 3, 2, 3. The median of the data is
Antworten
  • 2.5
  • 3
  • 2
  • 1

Frage 4

Frage
For the following distribution Class 60-70 70-80 80-90 90-100 100-110 Frequency 13 10 15 8 11 the upper limit of the median class is
Antworten
  • 110
  • 80
  • 90
  • 100

Frage 5

Frage
Consider the data Class 65-85 85-105 105-125 125-145 145-165 165-185 185-205 Frequency 4 5 18 20 17 7 4 The difference of the upper limit of the median class and the lower limit of the modal class is
Antworten
  • 20
  • 18
  • 0
  • 17

Frage 6

Frage
If ∑fi = 15, ∑fixi = 3p + 36 and the mean of the distribution is 3, then the value of p is
Antworten
  • 4
  • 2
  • 5
  • 3

Frage 7

Frage
If ∑fixi = 1860 and ∑fi = 30, then the value of x¯¯¯ is
Antworten
  • 62
  • 64
  • 63
  • 26

Frage 8

Frage
In the formula x¯¯¯=a+∑fidi / ∑fi, di represents
Antworten
  • a - xi
  • 2a+xi
  • xi+a
  • di=xi-a

Frage 9

Frage
The mean of the data when ∑fidi = -500, ∑fi = 100 and a = 125 is
Antworten
  • -500
  • 120
  • 125
  • 100

Frage 10

Frage
The mean of the first 10 prime numbers is
Antworten
  • 129
  • 12.9
  • 1.29
  • 11.9

Frage 11

Frage
The mean of the data when ∑fidi = 435, ∑fi = 30 and a = 47.5 is
Antworten
  • 47.5
  • 63
  • 30
  • 62

Frage 12

Frage
The mean of all the factors of 24 is
Antworten
  • 6.5
  • 24
  • 7.5
  • 7

Frage 13

Frage
The arithmetic mean of a set of 40 values is 65. If each of the 40 values is increased by 5, what will be the mean of the set of new values:
Antworten
  • 50
  • 65
  • 70
  • 60

Frage 14

Frage
The mean of 25 observations is 36. If the mean of the first 13 observations is 32 and that of the last 13 observations is 39, then the 13th observation is
Antworten
  • 32
  • 36
  • 23
  • 13

Frage 15

Frage
The arithmetic mean of 1, 2, 3, 4, ……………….., n is
Antworten
  • n(n+1)/2
  • n+1/2
  • n/2
  • n-1/2

Frage 16

Frage
The arithmetic mean of the following data is 53. Class 0-20 20-40 40-60 60-80 80-100 Frequency 12 15 32 p 13 The value of p is
Antworten
  • 17
  • 27
  • 20
  • 28

Frage 17

Frage
Upper class limit + Lower class limit / 2
Antworten
  • None of these
  • Class mark
  • frequency
  • class size

Frage 18

Frage
In a data, if l = 40, h = 15, f1 = 7, f0 = 3​​​​​​​, f2 = 6​​​​​​​, then the mode is
Antworten
  • 52
  • 72
  • 82
  • 62

Frage 19

Frage
For the following distribution Below 10 20 30 40 50 60 Frequency 3 12 27 57 75 80 the modal class is
Antworten
  • 20-30
  • 40-50
  • 30-40
  • 50-60

Frage 20

Frage
The time in seconds, taken by 75 athletes to run a 500m race are tabulated as below: Class 65-85 85-105 105-125 125-145 145-165 165-185 185-205 Frequency 4 5 18 20 17 7 4 The number of athletes who completed the race in less than 125 seconds is
Antworten
  • 27
  • 20
  • 18
  • 17

Frage 21

Frage
A card is drawn at random from a pack of 52 cards. The probability that the card is drawn is neither an ace nor a king is
Antworten
  • 11/13
  • 11/26
  • 1/26
  • 4/13

Frage 22

Frage
An unbiased die is thrown once. The probability of getting a prime number is
Antworten
  • 1/3
  • 1/5
  • 1/2
  • 1/4

Frage 23

Frage
A die is thrown once. The probability of getting an even number and a multiple of 3 is
Antworten
  • 1/2
  • 1/3
  • 1/6
  • 1/5

Frage 24

Frage
A number is selected at random from the numbers 7, 3, 9, 7, 9, 5, 7, 9, 9, 5. The probability that the selected number is their average is:
Antworten
  • 7/10
  • 3/10
  • 1/10
  • 5/10

Frage 25

Frage
There are 8 defective items in a sample of 24 items. One item is drawn at random. The probability that it is a non-defective item is
Antworten
  • 2/3
  • 1/2
  • 1
  • 1/3

Frage 26

Frage
If p is the probability of an event, then p satisfies
Antworten
  • 0 ≤ p ≤ 1
  • 0 < p < 1
  • 0 ≤ p < 1
  • 0 < p ≤ 1

Frage 27

Frage
Two dice are thrown simultaneously. The probability of getting a doublet is
Antworten
  • 1/6
  • 1/4
  • 2/3
  • 1/3

Frage 28

Frage
An unbiased die is thrown once. The probability of getting a prime or composite number is
Antworten
  • 5/6
  • 1/6
  • 1
  • 1/2

Frage 29

Frage
The probability of getting 3 head or 3 tails in tossing a coin 3 times is
Antworten
  • 1/2
  • 3/8
  • 1/4
  • 1/8

Frage 30

Frage
Two dice are rolled simultaneously. The probability that the sum of the numbers on the faces is 9 is
Antworten
  • 4/9
  • 5/9
  • 2/9
  • 1/9

Frage 31

Frage
A ticket is drawn from a bag containing 100 tickets numbered from 1 to 100. The probability of getting a ticket with a number divisible by 10 is
Antworten
  • 1/10
  • 4/10
  • 3/10
  • 1/5

Frage 32

Frage
A number is selected at random from 1 to 75. The probability that it is a perfect square is
Antworten
  • 4/75
  • 8/75
  • 6/75
  • 10/75

Frage 33

Frage
The probability that it will rain on a particular day is 0.76. The probability that it will not rain on that day is
Antworten
  • 0
  • 1
  • 0.76
  • 0.24

Frage 34

Frage
From a well shuffled pack of 52 cards, one card is drawn at random. The probability of getting a red queen is
Antworten
  • 1/26
  • 3/26
  • 1/13
  • 1/2

Frage 35

Frage
Ram and Shyam are friends. The probability that both will have the birthday on the same day is
Antworten
  • 1/365
  • 2/365
  • 364/365
  • 4/365

Frage 36

Frage
A letter of English alphabets is chosen at random. The probability that the letter chosen is a consonant is
Antworten
  • 2/26
  • 21/26
  • 1/26
  • 5/26

Frage 37

Frage
The king, queen and jack of clubs are removed from a deck of 52 cards and the remaining cards are shuffled. A card is drawn from the remaining cards. The probability of getting a king is
Antworten
  • 4/49
  • 3/52
  • 3/49
  • 4/52

Frage 38

Frage
Which of the following cannot be the probability of an event:
Antworten
  • 2/3
  • -1.5
  • 15%
  • 0.7

Frage 39

Frage
Cards each marked with one of the numbers 4,5,6,…20 are placed in a box and mixed thoroughly. One card is drawn at random from the box, what is the probability of getting an even prime number?
Antworten
  • 0
  • 1
  • 2
  • 3

Frage 40

Frage
What is the probability of getting a number less than 7 in a single throw of a die?
Antworten
  • 0
  • 1/2
  • 1
  • None of these
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