## NCERT Book for Class 11 Economics Statistics for Economics Chapter 3 Organisation of Data

Class 11 Economics students should refer to the following NCERT Book chapter Statistics for Economics Chapter 3 Organisation of Data in standard 11. This NCERT Book for Grade 11 Economics will be very useful for exams and help you to score good marks

### Statistics for Economics Chapter 3 Organisation of Data NCERT Book Class 11

**EXERCISES**

**1. Which of the following alternatives is true?**

**(i) The class midpoint 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 the lower class limit.

(d) None of the above.

**(ii) The frequency distribution of two variables is known as**

(a) Univariate Distribution

(b) Bivariate Distribution

(c) Multivariate Distribution

(d) None of the above

**(iii) Statistical calculations in classified data are based on**

(a) the actual values of observations

(b) the upper class limits

(c) the lower class limits

(d) the class midpoints

**(iv) Under Exclusive method,**

(a) the upper class limit of a class is excluded in the class interval

(b) the upper class limit of a class is included in the class interval

(c) the lower class limit of a class is excluded in the class interval

(d) the lower class limit of a class is included in the class interval

**(v) Range is the**

(a) difference between the largest and the smallest observations

(b) difference between the smallest and the largest observations

(c) average of the largest and the smallest observations

(d) ratio of the largest to the smallest observation

2. Can there be any advantage in classifying things? Explain with an example** **from your daily life.

3. What is a variable? Distinguish between a discrete and a continuous variable.

4. Explain the ‘exclusive’ and ‘inclusive’ methods used in classification of data.

**5. Use the data in Table 3.2 that relate to monthly household expenditure (in Rs) on food of 50 households and**

(i) Obtain the range of monthly household expenditure on food.

(ii) Divide the range into appropriate number of class intervals and obtain the frequency distribution of expenditure.

(iii) Find the number of households whose monthly expenditure on food is

(a) less than Rs 2000

(b) more than Rs 3000

(c) between Rs 1500 and Rs 2500

6. In a city 45 families were surveyed for the number of domestic appliances they used. Prepare a frequency array based on their replies as recorded below.

**1 3 2 2 2 2 1 2 1 2 2 3 3 3 3**

**3 3 2 3 2 2 6 1 6 2 1 5 1 5 3**

**2 4 2 7 4 2 4 3 4 2 0 3 1 4 3**

7. What is ‘loss of information’ in classified data?

8. Do you agree that classified data is better than raw data?

9. Distinguish between univariate and bivariate frequency distribution.

10. Prepare a frequency distribution by inclusive method taking class interval of 7 from the following data:

**28 17 15 22 29 21 23 27 18 12 7 2 9 4 6**

**1 8 3 10 5 20 16 12 8 4 33 27 21 15 9**

**3 36 27 18 9 2 4 6 32 31 29 18 14 13**

**15 11 9 7 1 5 37 32 28 26 24 20 19 25**

**19 20**

**Please refer to attached file for NCERT Class 11 Statistics Organisation of Data**

## Books recommended by teachers

NCERT Class 11 Statistics Glossary Of Statistical Terms |

NCERT Class 11 Statistics Table Of Two Digit Random Numbers |

NCERT Class 11 Economics Indian Economy On The Eve Of Independence |

NCERT Class 11 Economics LPG An Appraisal |

NCERT Class 11 Economics Poverty |

NCERT Class 11 Economics Human Capital Formation In India |

NCERT Class 11 Economics Rural Development |

NCERT Class 11 Economics Employment Growth And Other Issues |

NCERT Class 11 Economics Infrastructure |

NCERT Class 11 Economics Environment And Sustainable Development |

NCERT Class 11 Economics Comparative Development Experiences Of India And Its Neighbours |

NCERT Class 11 Economics Indian Economy |

NCERT Class 11 Statistics Introduction |

NCERT Class 11 Statistics Collection of Data |

NCERT Class 11 Statistics Organisation of Data |

NCERT Class 11 Statistics Presentation of Data |

NCERT Class 11 Statistics Measures of Central Tendency |

NCERT Class 11 Statistics Measures of Dispersion |

NCERT Class 11 Statistics Correlation |

NCERT Class 11 Statistics Index Numbers |

NCERT Class 11 Statistics Use of Statistical Tools |