MCQ Class 11 Economics Ch 3 Organization of Data CBSE Board

Statistics for Economics

1. What is a frequency curve?

A table showing only raw data

A method of classifying qualitative attributes

A graphical representation of a frequency distribution

A list of class limits

Question 1 of 20

2. What is the usual number of classes in a frequency distribution?

Between one and three

Between six and fifteen

Between twenty and thirty

More than fifty

Question 2 of 20

3. What is the range of a variable?

The sum of the largest and smallest values

The average of all observations

The difference between two class marks

The difference between the largest and smallest values

Question 3 of 20

4. When are unequal class intervals particularly useful?

When the range is very high or observations are concentrated in a small part of the range

When all observations are identical

When there is no numerical data

When only qualitative attributes are classified

Question 4 of 20

5. Which class intervals are generally used in frequency distributions?

Only open-ended intervals

Only unequal intervals

Equal-sized intervals in most cases

Intervals without class limits

Question 5 of 20

6. Which statement describes inclusive class intervals?

Both class limits are excluded

Both the lower and upper class limits are included

Only the upper class limit is included

Only the lower class limit is included

Question 6 of 20

7. Which statement describes exclusive class intervals?

Both limits must always be included

Neither limit can be specified

The class has no frequency

Either the upper or lower class limit is excluded

Question 7 of 20

8. Which type of class interval is often used for continuous variables?

Inclusive class intervals

Open-ended class intervals only

Class intervals without frequencies

Qualitative class intervals

Question 8 of 20

9. Why is an adjustment made to class intervals in some frequency distributions?

To remove all class frequencies

To change quantitative data into qualitative data

To maintain continuity between consecutive classes

To reduce every class frequency to one

Question 9 of 20

10. What does the frequency of an individual observation mean?

The midpoint of its class

The number of times it occurs in the raw data

The difference between its limits

The number of classes in the table

Question 10 of 20

11. What is the purpose of tally marks?

To calculate the range directly

To determine geographical locations

To calculate class marks only

To count the frequency of observations in each class

Question 11 of 20

12. How are tally marks commonly grouped to make counting easier?

In groups of five

In groups of two

In groups of ten only

In groups of three

Question 12 of 20

13. What is meant by loss of information in classified data?

All frequencies become zero

The number of observations always increases

Individual observations are no longer available in their original detail after grouping

The class limits disappear completely

Question 13 of 20

14. What is relative frequency?

The difference between the largest and smallest observations

Frequency expressed as a proportion or percentage of the total frequency

The sum of all class limits

The midpoint of the highest class

Question 14 of 20

15. In the frequency distribution of marks of 100 students, what is the frequency of the class 50–60?

Question 15 of 20

16. What is a frequency array?

A classification of data for a discrete variable, showing frequencies corresponding to its values

A classification of data according to geographical locations

A graphical representation of a continuous variable only

A table containing only class limits

Question 16 of 20

17. What is a univariate frequency distribution?

A distribution of geographical locations

A distribution of three variables

A frequency distribution of one variable

A distribution of two variables

Question 17 of 20

18. What is a bivariate frequency distribution?

A distribution of only one variable

A frequency distribution of two variables

A classification based only on time

A distribution without frequencies

Question 18 of 20

19. In a bivariate frequency distribution, what does each cell represent?

Only the largest observation

The class mark of every variable

The difference between the two variables

The frequency corresponding to the relevant row and column values

Question 19 of 20

20. What is the main advantage of classifying raw data?

It makes data easier to understand, compare and analyse

It preserves every individual observation in the same detail

It eliminates the need for statistical analysis

It prevents data from being arranged into groups

Question 20 of 20

Statistics for Economics

Leave a Reply Cancel reply

CBSE Board English Medium

CBSE Board Hindi Medium

बिहार बोर्ड

उत्तर प्रदेश बोर्ड

महाराष्ट्र बोर्ड

मध्य प्रदेश बोर्ड

ગુજરાત બોર્ડ

PSC Exam Preparation