Q2 – For the data in table (1). - 1- Draw the frequency distribution diagram. 2 - Find the class mark. 3 – Find the variance. 4 - Find the standard deviation. Table (1) Class Frequency (f) 30 – 32 3 33 – 35 7 36 - 38 76 39 – 41 53 42 – 44 9.

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