## Chapter 8 Index Numbers

Chapter 8 Index Numbers Question 1. An index number which accounts for the relative importance of the items is known as (i) weighted index (ii) simple aggregative index (iii) simple average of relatives Answer: (i) An index number becomes a weighted index when the relative importance of items is taken care of weighted index is […]

## Chapter 7 Correlation

Chapter 7 Correlation Question 1. The unit of correlation coefficient between height in feet and weight in kgs is (a) kg/feet (b) percentage (c) non-existent Answer: (c) Correlation coefficient (r) has no unit. It is a pure number. It meansss units of measurement are not part of r. Question 2. The range of simple correlation […]

## Chapter 6 Measures of Dispersion

Chapter 6 Measures of Dispersion Question 1. A measure of dispersion is a good supplement to the central value in understanding a frequency distribution. Comment. Answer: Dispersion is the extent to which values in a distribution differ from the avarage of the distribution. Knowledge of only average is insufficient as it does not reflect the […]

## Chapter 5 Measures of Central Tendency

Chapter 5 Measures of Central Tendency Question 1. Which average would be suitable in the following cases? (i) Average size of readymade garments. (ii) Average intelligence of students in a class. (iii) Average production in a factory per shift. (iv) Average wages in an industrial concern. (v) When the sum of absolute deviations from average […]

## Chapter 4 Presentation of Data

Chapter 4 Presentation of Data Answer: the following questions, 1 to 10, choosing the correct answer. Question 1. Bar diagram is a (a) one-dimensional diagram (b) two-dimensional diagram (c) diagram with no dimension (d) None of these Answer: (a) Bar diagrams are one-dimensional diagrams. Though these are represented on a plane of two axis in […]

## Chapter 3 Organisation of Data

Chapter 3 Organisation of Data Question 1. Which of the following alternatives is true? (i) The class mid-point is equal to (a) the average of the upper class limit and the lower class limit (b) the product of upper class limit and the lower class limit (c) the ratio of the upper class limit and […]

## Chapter 2 Collection of Data

Chapter 2 Collection of Data Question 1. Frame at least four appropriate multiple choice options for following questions (i) Which of the following is the most important when you buy a new dress? (ii) How often do you use computers? (iii) Which of the newspapers do you read regularly? (iv) Rise in the price of […]

## Chapter 1 Introduction

Chapter 1 Introduction Question 1. Mark the following statements as true or false. (i) Statistics can only deal with quantitative data. (ii) Statistics solves economic problems. (iii) Statistics is of no use to Economics without data. Answer: (i) False Statistics deals with both quantitative data as well as with qualitative data. Qualitative data describes the […]