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26. In a survey of 364 children aged 19-36 months, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is :
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Jul
26. In a survey of 364 children aged 19-36 months, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is : 26. In a survey of 364 children aged 19-36 months it was found that 91 [...]
25. In a sample study of 642 people, it was found that 514 people have a high school certificate. If a person is selected at random, the probability that the person has a high school certificate is :
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Jul
25. In a sample study of 642 people, it was found that 514 people have a high school certificate. If a person is selected at random, the probability that the person has a high school certificate is : 25. In a sample study of 642 people it was found that 514 people have a high [...]
24. Mode of the data 15, 14, 19, 20, 14, 15, 16, 14, 15, 18, 14, 19, 15, 17, 15 is
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Jul
24. Mode of the data 15, 14, 19, 20, 14, 15, 16, 14, 15, 18, 14, 19, 15, 17, 15 is 14 15 15 is 16 … 17 18 19 20 24. Mode of the data 15 July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class [...]
23. Median of the following numbers : 4, 4, 5, 7, 6, 7, 7, 12, 3 is
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Jul
23. Median of the following numbers : 4, 4, 5, 7, 6, 7, 7, 12, 3 is -12 23. Median of the following numbers : 4 3) is 4 5 6 7) July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 9 ,
22. For drawing a frequency polygon of a continous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abcissae are respectively :
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Jul
22. For drawing a frequency polygon of a continous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abcissae are respectively : 22. For drawing a frequency polygon of a continous frequency distribution we plot the points whose ordinates are the frequencies of the respective classes and abcissae [...]
21. The median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84 is
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Jul
21. The median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54, 84 is -22 -45 21. The median of the data 78 34 39 54 56 68 84 is July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths , NCERT Class 9 ,
20. The mean of 25 observations is 36. Out of these observations if the mean of first 13 observations is 32 and that of the last 13 observations is 40, the 13th observation is :
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Jul
20. The mean of 25 observations is 36. Out of these observations if the mean of first 13 observations is 32 and that of the last 13 observations is 40, the 13th observation is : 20. The mean of 25 observations is 36. Out of these observations if the mean of first 13 observations is [...]
19. There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be –3.5. The mean of the given numbers is :
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Jul
19. There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be –3.5. The mean of the given numbers is : 19. There are 50 numbers. Each number is subtracted from 53 and the mean of the numbers so obtained is found to be [...]
18. The mean of 100 observations is 50. If one of the observations which was 50 is replaced by 150, the resulting mean will be :
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Jul
18. The mean of 100 observations is 50. If one of the observations which was 50 is replaced by 150, the resulting mean will be : 18. The mean of 100 observations is 50. If one of the observations which was 50 is replaced by 150 the resulting mean will be : July 3, 2021 [...]
17. If 1x , 2 x , 3 x , … , n x are the means of n groups with n1 , n2 , … , nn number of observations respectively, then the mean x of all the groups taken together is given by :
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Jul
17. If 1x , 2 x , 3 x , … , n x are the means of n groups with n1 , n2 , … , nn number of observations respectively, then the mean x of all the groups taken together is given by : ... 17. If 1x 2 x 3 x n [...]