Question 1.
The most common measurement of central tendency is:
(a) Median
(b) Multiple
(c) Mean
(d) Weighted mean.

Answer

Answer: (c) Mean

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Question 2.
Division of one column in ten equal parts is called:
(a) Decile
(b) Quartile
(c) Percentile
(d) None.

Answer

Answer: (a) Decile

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Question 3.
Which of the following equation is correct:
(a) Anova = σ
(b) Anova = σ^-2
(c) Anova = σ⁴
(d) Anova = √σ × 2.

Answer

Answer: (b) Anova = σ^-2

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Question 4.
Where is correlation multiple placed:
(a) Between 0 and + 1
(b) Between – 1 and 0
(c) Between – 1 and + 1
(d) None of these.

Answer

Answer: (c) Between – 1 and + 1

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Question 5.
Base year is:
(a) Comparison year
(b) Present year
(c) Any year
(d) One year previous to present year.

Answer

Answer: (a) Comparison year

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Fill in the blanks:

1. Rule of ……………………….. is supposed to be idle for creation of index.

Answer

Answer: Fisher

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2. Multiple is the value of column in which ……………………… comes repeatedly.

Answer

Answer: Maximum

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3. The value which divides the column into more than two parts is called ……………………………

Answer

Answer: Division

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4. ………………………. is the difference between maximum and minimum value.

Answer

Answer: Range

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5. …………………………. is the simple ray that shows relation between two values.

Answer

Answer: Analogical relation

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State true or false:

1. Cumulative frequency shows “less than” or “more than” of any sequence.

Answer

Answer: True

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2. 5 is the mode of the numbers 3, 4, 3, 5, 5, 3, 2.

Answer

Answer: False

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3. Range is found by adding highest value and smallest value.

Answer

Answer: False

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4. Money inflation is measured on changes of index number of whole sale market of weekly statement.

Answer

Answer: True

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5. High income leads high savings.

Answer

Answer: True

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Match the columns:

Column A	Column B
1. \(\frac { Σx }{ N }\), here Σx is	(a) Positive or negative
2. Formula of range	(b) Minimum effect of values
3. Type of correlation	(c) Total of all values
4. Consumer Price Index	(d) \(\frac { H-L }{ H+L }\)
5. Median	(e) Cost of living index.

Answer

Answer:

Column A	Column B
1. \(\frac { Σx }{ N }\), here Σx is	(c) Total of all values
2. Formula of range	(d) \(\frac { H-L }{ H+L }\)
3. Type of correlation	(a) Positive or negative
4. Consumer Price Index	(e) Cost of living index.
5. Median	(b) Minimum effect of values

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Answer in one word:

1. Graphic method of studying dispersion.

Answer

Answer: Lorenz curve

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2. Definite relation between two or more groups.

Answer

Answer: Correlation

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3. One which divides column in ten equal parts.

Answer

Answer: Deciles

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4. In India which index helps to measure average change in prices.

Answer

Answer: Consumer Price Index

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5. Saving is directly related to.

Answer

Answer: Income

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6. What is measure of central tendency?

Answer

Answer: Measure of central tendency is the single value which represents the characteristics of the entire universe.

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7. Which is the popular measure of central tendency?

Answer

Answer: Arithmetic mean.

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8. Define Arithmetic mean?

Answer

Answer: It is defined as the sum of the values of all observations divided by the number of observations.

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9. Find out mode from the following data:
7, 12, 8, 5, 9, 10, 9, 11, 96

Answer

Answer: 9 is the number which is repeated maximum number of times. Hence, mode is 9.

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10. Write the formula of weighted arithmetic mean?

Answer

Answer: Weighted Arithmetic Mean = \(\frac{ΣWx}{ΣW}\)

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