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Question 1
A coin is tossed 100 times with the following frequencies:
Head: 55, Tail: 45
The probability of the event of getting a Head and the event of getting a Tail are respectively.
Head: 55, Tail: 45
The probability of the event of getting a Head and the event of getting a Tail are respectively.
Question 2
A set of data is arranged in ascending order. If the median of data is 5th in the table from the beginning, what is the number of observation? It is known that number of observation is odd.
Question 3
find the median of the following data, which gives the marks, out of 50, obtained by 30 students in a test:
Question 4
A die is thrown once. Find the probability of getting a prime number.
Question 5
If standard deviation of a data is 3 and sum of square all the deviations (residual) with respect to the mean is 81. Then what is the number of data points?
Question 6
The following data regarding the number of plants in 20 houses in a locality. What is the value of 
Question 7
If the mean of 6,7,x,8,y,14 is 9, then what will be correct relation between x and y?
Question 8
What is the mode of data given below
Question 9
The following data gives the information about number of family member in 20 different household.
What is the mode of this data?
What is the mode of this data?
Question 10
The mean of first n odd natural numbers is n2/81, then n = ?
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Dec 23CDS & Defence
