Statistics and Econometrics Online Practice Exam 3

Test

# Question

1. In a series of 25 observations, Z (x – 7) = – 8. Then, mean is equal to-

8

6.68

7.68

7

# Question

2. Total wages paid to the workers in two factories A and B are the same but the modal wage in factory A is larger than the modalwage in factory B. In which factory workers are well off ?

A

B

Equal in both

# Question

3.  Which of the following would be an appropriate average for determining the average size of readymade garments ?

A.M

Mode

Median

Geometric mean

# Question

4. Most appropriate average to determine the size of oranges on a tree is-

A.M

Median

G.M

Mode

# Question

5. Most appropriate average for qualitative measurement is-

G.M

Median

A.M

Mode

# Question

6. The most unstable measure of central tendency is

A.M

G.M

Mode

Median

# Question

7. The sum of deviations of observation is zero when measured from

G.M

A.M

Median

Mode

# Question

8. The average, most affected by the extreme observations, is

Mode

G.M

Median

A.M

# Question

9. The most stable average is

Mode

Median

G.M

A.M

# Question

10. Which of the following is not true ?

The value of median of a data set gets affected by extreme values that are not representative of the data set

Median is the point below which 50% of the data items fall

Median can be calculated from a grouped data with open ended classes

Median of a set of ungrouped data can be found out only after arranging them is ascending of descending order

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