11. Match the following columns
Column I
Column II
a. Student's distribution was discovered by
1. N is > 30
b. Large sample theory is applicable when
2. Gosset
c. The $${\chi ^2}$$-test was devised by
3. Always positive
d. The calculated value of $${\chi ^2}$$ is
4. Karl Pearson
| Column I | Column II |
| a. Student's distribution was discovered by | 1. N is > 30 |
| b. Large sample theory is applicable when | 2. Gosset |
| c. The $${\chi ^2}$$-test was devised by | 3. Always positive |
| d. The calculated value of $${\chi ^2}$$ is | 4. Karl Pearson |
12. Statistics is the science of estimates and probabilities'. Whose definition is this?
13. The square of the standard deviation is known as the
14. Which one of the following is not a measure of central tendency?
15. The standard deviation of Poisson distribution is
16. When population under investigation is infinite we should use the
17. Match the following columns
Column I
Column II
a. The variable we are trying to predict is called the
1. Dependent variable
b. The regression lines cut each other at the point of
2. Average of x and y
c. The regression line of y on x
3. Minimise total of the square of the horizontal deviations
d. Both the regression coefficient can not
4. Exceed one
| Column I | Column II |
| a. The variable we are trying to predict is called the | 1. Dependent variable |
| b. The regression lines cut each other at the point of | 2. Average of x and y |
| c. The regression line of y on x | 3. Minimise total of the square of the horizontal deviations |
| d. Both the regression coefficient can not | 4. Exceed one |
18. A single letter is selected at random from the work 'PROBABILITY'. The probability that it is a vowel will be
19. In randomized block design, how many treatments can be adopted without any loss of efficiency
20. The measure based on all the values of variable is
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