11th maths chapter 9 miscellaneous examples 21,22,23,24

Form a grouped frequency distribution from the following data by inclusive method taking 4as the magnitude of class intervals. 31,23,19,29,22,20,16,10,13,34,38,33,28,21,15,18,36,24,18,15, 12,30,27,23,20,17,14,32,16,25,18,29,24,19,16,11,22,15,17,10

From a grouped frequency distribution from the following data by inclusive method taking 4 as the magnitude of class intervals. 31,23,19,29,22,20,16,10,13,34, 38,33,28,21,15,18,36,24,18,15, 12,30,27,23,20,17,14,32,26,25 18,29,24,19,16,11,22,15,17,10

Form a grouped frequency distribution from the following data by inclusive method taking 4 as the magnitude of class intervals. 31,23,19,29,22,20,16,10,13,34 38,33,28,21,15,18,36,24,18,15 12,30,27,23,20,17,14,32,26,25 18,29,24,19,16,11,22,15,17,10

Find the mean deviation from the mean for the following data: Size:, 20, 21, 22, 23, 24 frequency, 6, 4, 5, 1, 4

Find the mean deviation from the mean for the following data: Size:, 20, 21, 22, 23, 24 frequency, 6, 4, 5, 1, 4

The weights (in kg) of 10 students of a class are given below: 21,28.5,20.5,24,25.5, 22, 27.5,28,21 and 24. Find the median of their weights.

Find the mode for the following series: 2.5, 2.3, 2.2, 2.4, 2.7, 2.7, 2.5, 2.3, 2.2, 2.6, 2.2

An ellipse has point (1,-1)a n d(2,-1) as its foci and x+y-5=0 as one of its tangents. Then the point where this line touches the ellipse is (a) ((32)/9,(22)/9) (b) ((23)/9,2/9) (c) ((34)/9,(11)/9) (d) none of these

The reaction of concentrated sulphuric acid with carbohydrates (C_(12)H_(22)O_(11) is an example of

The sum of two consecutive whole numbers is 43. The smaller number is (a)21 (b) 22 (c)23 (d) 24