Class Interval
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Q. Assertion: We find midpoints of a class interval with the following formula.
upper class limit+lower class limit2
Reason: To draw frequency polygons independently without drawing histogram it is required to have the class mark.
Which of the following is correct?
upper class limit+lower class limit2
Reason: To draw frequency polygons independently without drawing histogram it is required to have the class mark.
Which of the following is correct?
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is not the correct explanation of A
- A is false and R is true
- A is true and R is false
Q. Number of eggs in different egg trays is plotted in the given histogram.
How many egg trays are there in total?
Number of eggs
How many egg trays are there in total?
Number of eggs
Q. In histograms, there are no gaps between consecutive rectangles.
- True
- False
Q. The following marks were obtained by the students in a test
81, 72, 90, 90, 86, 85, 92, 70, 71, 83, 89, 95, 85, 79, 62.
What is the range of the marks obtained?
81, 72, 90, 90, 86, 85, 92, 70, 71, 83, 89, 95, 85, 79, 62.
What is the range of the marks obtained?
- 9
- 17
- 27
- 33
Q. Give an example to justify the statement "If x and y are both odd positive integers , then x2+y2 is even but not divisible by 4" .
Q. In histograms, there are no gaps between consecutive rectangles.
- True
- False