Q 1: If in a bar diagram the length of the rectangle representing 50 units in 10cm, the length of the bar representing 30 units in the same bar diagram is _______. 5cm. none of these 6cm. 7cm.

Q 2: For the construction of a frequency polygon _______ and frequencies are taken into consideration. upper limits of the class mid values of class lower limits of the class

Q 3: In a histogram the sidths of all rectangles are ______. not equal equal

Q 4: If the upper boundary of a class is 30, class interval is 10, then the lower boundary of the class is _______. 20 10 30

Q 5: In bar diagrams values of data are represented by _______. triangle rectangle square

Q 6: If 1-5, 6-10, 11-15,............ are the classes of a frequency distribution then the upper boundary of class 11-15 is ________. 15 15.5 11

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