**1. Unit less measure of dispersion is**

a) Range

b) Standard deviation

c) Mean deviation

d) CV

**2. Which measure of central tendency requires data arrangement in ascending or descending order for its estimation?**

a)Arithmetic mean

b)Median

c)Mode

d)Harmonic mean

**3. The most frequent occurred value of data or whose frequency is maximum is known as**

a)Arithmetic mean

b)Median

c)Mode

d)Harmonic mean

Points to remember: Measure of Central Tendency |

**4. In a symmetrical distribution of data which pair is correct?**

a) Mean = Median=Mode

b) Mean > Median >Mode

c) Mean < Median<Mode

d) Mean = Median>Mode

**5. To calculate the average speed, which item of central tendency is most suited?**

a)Median

b) Mode

c) Weighted HM

d) Weighed AM

**6. Mean deviation is the least when calculated about (minimal property)**

a)median

b)mode

c)arithmetic mean

d)geometric mean

**7. The hypothesis of committing type I error is known as**

a) test of significance

b) level of significance

c) composite hypothesis

d) none of the above

**8. For comparison of two means from independent samples which test is applicable**

a) F test

b) t test

c) z test

d) chi square test

**9. The coefficient of variation can be calculated by using the formula**

a) Standard deviation / geometric mean x 100

b) Arithmetic mean /Standard deviation x 100

c) Square root of Standard deviation/ arithmetic mean x 100

d) Standard deviation / arithmetic mean x 100

**10. Arithmetic mean and variance are always equal in**

a) Binomial

b) Poisson distribution

c) Normal distribution

d) None of the above

**Learn more:**

**Answers**

1. d) CV

2. b)Median

3. c)Mode

4. a) Mean = Median=Mode

5. c) Weighted HM

6. a)median

7. b) level of significance

8. b) t test

9. d) Standard deviation / arithmetic mean x 100

10. b) Poisson distribution

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