The blood groups of 30 students are recorded as follows:
A, B, O, A, AB, O, A, O, B, A, O, B, A, AB, B, A, AB, B,
A, A, O, A, AB, B, A, O, B, A, B, A
Prepare a frequency distribution table for the data.
The following observations are arranged in ascending order :
26, 29, 42, 53, x, x + 2, 70, 75, 82, 93
If the median is 65, find the value of x.
Heights (in cm) of 30 girls of Class IX are given below:
140, 140, 160, 139, 153, 153, 146, 150, 148, 150, 152,
146, 154, 150, 160, 148, 150, 148, 140, 148, 153, 138,
152, 150, 148, 138, 152, 140, 146, 148.
Prepare a frequency distribution table for this data.
As the number of tosses of a coin increases, the ratio of the number of heads to the total number of tosses will be 1/2 . Is it correct? If not, write the correct one.
Can the experimental probability of an event be greater than 1? Justify your anwer.
Can the experimental probability of an event be a negative number? If not, why?
The class marks of a continuous distribution are :
1.04, 1.14, 1.24, 1.34, 1.44, 1.54 and 1.64
Is it correct to say that the last interval will be 1.55 – 1.73? Justify your answer
Is it correct to say that in a histogram, the area of each rectangle is proportional to the class size of the corresponding class interval? If not, correct the statement.
A child says that the median of 3, 14, 18, 20, 5 is 18. What doesn’t the child understand about finding the median?
+91 94284 01196
© Copyright 2025. Doubtora. All Rights Reserved
