Q24 of 40 Page 1

Find the mean of the following distribution:

OR


Find the mode of the following data:





Mean


OR



Model class = 60-80


Lower limit of model class, l = 60


Frequency of model class, f1 = 12


Frequency of class preceding model class, f0 = 10


Frequency of class following model class, f �2 = 6


Height of model class, h = 10


We know,




= 60 + 0.4


= 60.4


More from this chapter

All 40 →
22

The rod AC of a TV disc antenna is fixed at right angles to the wall AB and a rod CD is supporting the disc as shown in fig. 4. If AC = 1.5 m long and CD = 3 m, find (i) tan θ (ii) sec θ + cosec θ.


 23

If a number x is chosen at random from the numbers -3, -2, -1, 0, 1, 2, 3. What is probability that x2 ≤ 4?

 25

Find the sum of first 20 terms of the following AP :

1,4,7,10,_____ .


 26

The perimeter of a sector of a circle of radius 5.2 cm is 16.4cm. Find the area of the sector.