Q9 of 35 Page 195


Let us write the frequency density of the first class of the above frequency distribution table.

class size of class = (upper limit + 0.5) - (lower limit - 0.5)

= (74 + 0.5) - (70 - 0.5)


= 74.5 - 69.5 = 5


Frequency density of class



So frequency density of the first class = 0.6


More from this chapter

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9

In a continuous frequency distribution table if the mid - point of a class is m and the upper class - boundary is u, then let us find out the lower class - boundary.

 9

In a continuous frequency distribution table, if the mid - point of a class is 42 and class size is 10, then let us write the upper and lower limit of the class.

 9

Let us write the frequency density of the last class of the question (c).

 9

Let us write from the following examples which one indicates attribute and which one indicates variable.

(i) Population of the family.


(ii) Daily temperature.


(iii)Educational value.


(iv)Monthly income.


(v) Grade obtained in Madhyamik Examination.