61.
Find out which one is wrong?

62.
Which one of the following is not the correct statement regarding sampling distribution of mean?

63.
Which of the following tests can be applied to ordinal scale data?
1. Chi-square test
2. 'Z' test
3. Kruskal-Wallis test
4. Wilcoxon Mann-Whitney test

66.
Which of the following statement is correct?
i. In the creation of index only representative times are selected
ii. If the price of wheat increases by 50% and the price of salt decreases by 50%, the CPI will remain unchanged

67.
Company A produces 10% defective products, Company B produces 20% defective products and C produces 5% defective products. If choosing a company is an equally likely event, then find the probability that the product chosen is defective.

69.
Which of the following is a data?
i. The weight of Ram is 80 kg while that of Shyam and Mohan is 85 and 65 kg respectively
ii. Hari's age is 55 years
iii. A sold less than B, B sold more than C
iv. ram's height is 5'6", Shyam's weight is 70 kg and Sohan's age is 40 years
Select your answer from the options given below