NCERT class 10 maths chapter 14 Statistics
Question 1:The following distribution gives the daily income of 50 workers of a factory. Daily income (in `) 100 - 120 120 - 140 140 - 160 160 - 180 180 - 200 Number of workers 12 14 8 6 10 Convert the distribution above to a less than type cumulative frequency distribution, and draw its ogive.
Exercise 14.4 maths class 10 Chapter 14 Statistics
Question 2:During the medical check-up of 35 students of a class, their weights were recorded as follows: Weight (in kg) Number of students Less than 38 0 Less than 40 3 Less than 42 5 Less than 44 9 Less than 46 14 Less than 48 28 Less than 50 32 Less than 52 35 Draw a less than type ogive for the given data. Hence obtain the median weight from the graph and verify the result by using the formula.
Question 3:The following table gives production yield per hectare of wheat of 100 farms of a village. Production yield 50 - 55 55 - 60 60 - 65 65 - 70 70 - 75 75 - 80 (in kg/ha) Number of farms 2 8 12 24 38 16 Change the distribution to a more than type distribution, and draw its ogive.