Basic Statistics 7

1. The average monthly production of a factory for the first 8 months is 2,500 units, and for the next 4 months, the production was 1,200 units. The average monthly production of the year will be

2. If the price of a commodity remains at RS. 20 per KG for the whole month then measure of dispersion will be

3. A statistics which is not measurable is called

4. A relative frequency distribution presents frequencies in terms of _______.

5. “The sum of squares of deviations of the values is least” when deviations are taken from

6. If $\overline{x}$ is 4 and the distribution is 2, 3, 4, 5, 6, the sum of squared deviations from the $\overline{x}$ will be:

7. The data which have already been collected by someone is called _______ data.

8. Which of the measures given here are based on every item of the series (uses all observations)?

9. When all the values in a series occur the same number of times, then one must not compute the

10. The process of arranging data into rows and columns is called

11. The weight of the earth is _______.

12. In a frequency distribution the last cumulative frequency is 300, Median shall lie in:

13. Given the $N$ values in a series, the geometric mean is

14. A contractor employs 20 male, 15 female and 5 children in his factory. Male wages are Rs. 10 per day, female Rs. 8 per day, and children Rs. 3 per day. The weighted $\overline{x}$ of wages paid per day will be

15. Find the median of the following data: 160, 180, 200, 280, 300, 320, 400

16. The mean of 10 observations is 10. All observations are increased by 10%. The mean of the increased observations shall be

17. In a frequency distribution, the last cumulative frequency is 500. $Q_3$ (Third Quartile) must lie in

18. The number 143.9500 rounded off to the nearest tenth (one decimal place) is

19. If $\overline{X}=100$ and $Y=2X-200$ then the mean of $Y$ values will be

20. In a week the prices of a bag of rice were 350, 280, 340, 290, 320, 310, 300. The range is

21. In a distribution of 10, 20, 30, 40, 50, the $\overline{x}$ is 30, the sum of deviations from $\overline{x}$ will be