**Case Study Questions for Class 10 Maths Chapter 14 Statistics**

**Question 1:**

Direct income in India was drastically impacted due to the COVID-19 lockdown. Most of the companies decided to bring down the salaries of the employees upto 50%.

The following table shows the salaries (in percent) received by 50 employees during lockdown.

Based on the above information, answer the following questions.

(i) Total number of persons whose salary is reduced by more than 20% is

(a) 40

(b) 46

(c) 30

(d) 22

(ii) Total number of persons whose salary is reduced by atmost 40% is

(a) 32

(b) 40

(c) 46

(d) 18

(iii) The modal class is

(a) 50-60

(b) 60-70

(c) 70-80

(d) 80-90

(iv) The median class of the given data is

(a) 50-60

(b) 60-70

(c) 70-80

(d) 80-90

(v) The empirical relationship among mean, median and mode is

(a) 3 Median = Mode +2 Mean

(b) 3 Median = Mode âˆ’2 Mean

(c) Median = 3 Mode âˆ’2 Mean

(d) Median =3 Mode +2 Mean

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Chapter 1 Real Numbers

Chapter 2 Polynomials

Chapter 3 Pair of Linear Equations in Two Variables

Chapter 4 Quadratic Equations

Chapter 5 Arithmetic Progressions

Chapter 6 Triangles

Chapter 7 Coordinate Geometry

Chapter 8 Introduction to Trigonometry

Chapter 9 Some Applications of Trigonometry

Chapter 10 Circles

Chapter 11 Constructions

Chapter 12 Areas Related to Circles

Chapter 13 Surface Areas and Volumes

Chapter 14 Statistics

Chapter 15 Probability