NCERT Class 9
A child says that the median of 3,14,18,20,5 is 18. What doesn’t the child understand about finding the median?
03
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?
03
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 :
03
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
03
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
03
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 :
03
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 :
03
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 :
03
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
03
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 [...]