Chapter 14 – Statistics
A child says that the median of 3,14,18,20,5 is 18. What doesn’t the child understand about finding the median?
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Jul
A child says that the median of 3,14,18,20,5 is 18. What doesn’t the child understand about finding the median? 14 18 20 5 is 18. What doesn't the child understand about finding the median? A child says that the median of 3 July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability [...]
In a diagnostic test in mathematics given to students, the following marks (out of 100) are recorded: 46,52,48,11,41,62,54,53,96,40,98,44 Which average will be a good representative of the above data?
03
Jul
In a diagnostic test in mathematics given to students, the following marks (out of 100) are recorded: 46,52,48,11,41,62,54,53,96,40,98,44 Which average will be a good representative of the above data? 11 40 41 44 Which average will be a good representative of the above data? 48 5^2 53 54 62 96 98 In a diagnostic test [...]
1. The frequency distribution : has been represented graphically as follows : Do you think this representation is correct? Why?
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Jul
1. The frequency distribution : has been represented graphically as follows : Do you think this representation is correct? Why? 1. The frequency distribution : has been represented graphically as follows : Do you think this representation is correct? Why? July 3, 2021 Category: Chapter 14 - Statistics , Chapter 15 - Probability , Maths [...]
30. Refer to Q.29 above : The probability that bulbs selected randomly from the lot has life less than 900 hours is :
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Jul
30. Refer to Q.29 above : The probability that bulbs selected randomly from the lot has life less than 900 hours is : 30. Refer to Q.29 above : The probability that bulbs selected randomly from the lot has life less than 900 hours is : July 3, 2021 Category: Chapter 14 - Statistics , [...]
29. 80 bulbs are selected at random from a lot and their life time (in hrs) is recorded in the form of a frequency table given below : One bulb is selected at random from the lot. The probability that its life is 1150 hours, is
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Jul
29. 80 bulbs are selected at random from a lot and their life time (in hrs) is recorded in the form of a frequency table given below : One bulb is selected at random from the lot. The probability that its life is 1150 hours, is 1. The class mark of the class 90 - [...]
28. Two coins are tossed 1000 times and the outcomes are recorded as below : Based on this information, the probability for at most one head is
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Jul
28. Two coins are tossed 1000 times and the outcomes are recorded as below : Based on this information, the probability for at most one head is 28. Two coins are tossed 1000 times and the outcomes are recorded as below : Based on this information the probability for at most one head is July [...]
27. In a medical examination of students of a class, the following blood groups are recorded: A student is selected at random from the class. The probability that he/she has blood group B, is :
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Jul
27. In a medical examination of students of a class, the following blood groups are recorded: A student is selected at random from the class. The probability that he/she has blood group B, is : 27. In a medical examination of students of a class is the following blood groups are recorded: A student is [...]
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 [...]