# NCERT solutions for Ncert Class 11 Economics - Statistics for Economics chapter 5 - Measures of Central Tendency [Latest edition]

#### Chapters

Chapter 1: Introduction

Chapter 2: Collection of Data

Chapter 3: Organisation of Data

Chapter 4: Presentation of Data

Chapter 5: Measures of Central Tendency

Chapter 6: Measures of Dispersion

Chapter 7: Correlation

Chapter 8: Index Numbers

Chapter 9: Use of Statistical Tools

## Chapter 5: Measures of Central Tendency

Exercise
Exercise [Pages 71 - 72]

### NCERT solutions for Ncert Class 11 Economics - Statistics for Economics Chapter 5 Measures of Central Tendency Exercise [Pages 71 - 72]

Exercise | Q 1.1 | Page 71

Which average would be suitable in the following case?

Exercise | Q 1.2 | Page 71

Which average would be suitable in the following case?

The average intelligence of students in a class.

Exercise | Q 1.3 | Page 71

Which average would be suitable in the following case?

Average production in a factory per shift.

Exercise | Q 1.4 | Page 71

Which average would be suitable in the following case?

The average wage in an industrial concern.

Exercise | Q 1.5 | Page 71

Which average would be suitable in the following case?

When the sum of absolute deviations from average is least.

Exercise | Q 1.6 | Page 71

Which average would be suitable in the following case?

When quantities of the variable are in ratios.

Exercise | Q 1.7 | Page 71

Which average would be suitable in the following case?

In case of an open-ended frequency distribution.

Exercise | Q 2.1 | Page 71

Indicate the most appropriate alternative from the multiple choices provided against the question.

The most suitable average for qualitative measurement is

• arithmetic mean

• median

• mode

• geometric mean

• none of the above

Exercise | Q 2.2 | Page 71

Indicate the most appropriate alternative from the multiple choices provided against the question.

Which average is affected most by the presence of extreme items?

• median

• mode

• arithmetic mean

• none of the above

Exercise | Q 2.3 | Page 71

Indicate the most appropriate alternative from the multiple choices provided against the question.

The algebraic sum of deviation of a set of n values from A.M. is

• n

• 0

• 1

• none of the above

Exercise | Q 3.1 | Page 72

Comment whether the following statement is true or false.

The sum of deviation of items from the median is zero.

• True

• False

Exercise | Q 3.2 | Page 72

Comment whether the following statement is true or false.

An average alone is not enough to compare series.

• True

• False

Exercise | Q 3.3 | Page 72

Comment whether the following statement is true or false.

The arithmetic mean is a positional value.

• True

• False

Exercise | Q 3.4 | Page 72

Comment whether the following statement is true or false.

The upper quartile is the lowest value of the top 25% of items.

• True

• False

Exercise | Q 3.5 | Page 72

Comment whether the following statement is true or false.

Median is unduly affected by extreme observations.

• True

• False

Exercise | Q 4 | Page 72

If the arithmetic mean of the data given below is 28, find (a) the missing frequency, and (b) the median of the series:

 Profit per retail shop (in Rs) 0 – 10 10 – 20 20 – 30 30 – 40 40 – 50 50 – 60 Number of retail shops 12 18 27 – 17 6
Exercise | Q 5 | Page 72

The following table gives the daily income of ten workers in a factory. Find the arithmetic mean.

 Workers A B C D E F G H I J Daily Income (in Rs) 120 150 180 200 250 300 220 350 370 260
Exercise | Q 6 | Page 72

Following information pertains to the daily income of 150 families. Calculate the arithmetic mean.

 Income (in Rs) Number of families More than 75 150 More than 85 140 More than 95 115 More than 105 95 More than 115 70 More than 125 60 More than 135 40 More than 145 25
Exercise | Q 7 | Page 72

The size of land holdings of 380 families in a village is given below. Find the median size of land holdings.

 Size of Land Holdings (in acres) Less than 100 100 – 200 200 – 300 300 – 400 400 and above Number of families 40 89 148 64 39

Exercise

## NCERT solutions for Ncert Class 11 Economics - Statistics for Economics chapter 5 - Measures of Central Tendency

NCERT solutions for Ncert Class 11 Economics - Statistics for Economics chapter 5 (Measures of Central Tendency) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Ncert Class 11 Economics - Statistics for Economics solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Ncert Class 11 Economics - Statistics for Economics chapter 5 Measures of Central Tendency are Measures of Central Tendency - Mean, Measures of Central Tendency - Median, Measures of Central Tendency - Mode, Measures of Central Tendency - Central Value Or Representative Value, Measures of Central Tendency - Series, Measures of Central Tendency - Partition Value, Measures of Central Tendency - Quartile, Measures of Central Tendency - Deciles, Measures of Central Tendency - Percentile, Measures of Dispersion - Absolute Dispersion, Measures of Dispersion - Relative Dispersion, Lorenz Curve - Meaning, Lorenz Curve - Construction and Its Application, Correlation Meaning, Properties of Correlation,, Types of Correlation, Scatter Diagram of Correlation, Measures of Correlation - Karl Pearson'S Method (Two Variables Ungrouped Data), Measures of Correlation - Spearman's Rank Correlation, Meaning of Index Numbers, Uses of Index Numbers, Types of Index Number - Wholesale Price Index, Types of Index Number - Consumer Price Index, Types of Index Number - Index of Industrial Production, Construction of Price Index, Cost of Living Index Number, Inflation and Index Numbers, Method to Measure - Simple Aggregate Method, Method to Measure - Simple Average Price Relative Method, Method to Measure - Laspeyer Method, Method to Measure - Paasche's Index Numer, Method to Measure - Fisher's Method.

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