Find median for the following data: Class Interval: 0–20 | 20–30 | 30–40 | 40–50 Frequency: 42 | 25 | 58 | 40

The median of the following distribution is 28.5, the values of x and y are respectively Class Interval: 0–10 | 10–20 | 20–30 | 30–40 | 40–50 | 50–60 Frequency: 5 | x | 20 | 15 | y | 5 where the tota…

For histogram based on a frequency distribution with unequal class intervals the frequency of a class should be proportional to the ______ of the rectangle representing the class.

Which one of the following is NOT a graphical presentation of a frequency distribution?

In an examination, the distribution of marks obtained by 30 students is given in the following table: Marks: 10–25 | 25–40 | 40–55 | 55–70 | 70–85 | 85–100 No. of Students: 2 | 3 | 7 | 6 | 6 | 6 The…

Which one of the following is the correct sequence in respect of the Roman numerals—C, D, L and M?