CBSE Class 10-Mathematics: Chapter – 14 Statistics Part 9 (For CBSE, ICSE, IAS, NET, NRA 2023)
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Question 15:
Construct the cumulative frequency distribution of the following distribution:
Class Interval | ||||||
Frequency |
Answer:
The required cumulative frequency distribution of the given distribution is given below:
Class Interval | Frequency (f) | Cumulative frequency |
Total |
Question 16:
If the values of mean and median are and , what will be the value of mode?
Answer:
We know that
Mode median mean
Mode
Question 17:
The marks obtained by students of class X of a certain school in a Mathematics paper consisting of marks are presented in table below. Find the mean of the marks obtained by the students.
Marks obtained | |||||||||||||
Students |
Answer:
Marks obtained | No. of students | |
Thus, mean