Commerce · all questions

Business Statistics and Research Methods
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Q861

Find out which one is wrong?

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Q862

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

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Q863

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

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Q864

The method of analysis is used-

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Q865

The degree of peaked or flatness of a unimodal distribution is called:

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Q866

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

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Q867

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.

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Q868

When variations in the values of two variables have a constant ratio, there will be:

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Q869

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

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Q870

In case of positively skewed distribution, the extreme values lie in the:

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Q871

Which of the following is not a correct statement about a probability?

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Q872

If for a given data, mode = 5, median = 15 and mean = 20, it means that the sample data is-

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Q873

Assertion (A) If a random sample of 'n' observations is taken from a binomial population with parameter as p, the sampling distributions will be a standard deviation which is normally distributed.
Reason (R) Standard deviation of binomial distribution

σ P = \frac{pq}{n},

where q = 1 - p

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Q874

In a frequency distribution, Bowley's coefficient of skewness is 0.6, if the sum of two quartiles is 100 and median is 38, the value of third quartile will be

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Q875

Which one of the following formulae is used to calculate probable error of correlation coincident between two variables of 'n' pairs of observations?

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Q876

If the third moment about mean is zero, then the distribution is:

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Q877

In which approach to probability the outcomes are equally likely to occur?

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Q878

The mean deviation is minimal-

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Q879

In case of . . . . . . . . distribution mean, median, mode coincide.

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Q880

According to central limit theorem, if the sample size increases, distribution is said to be . . . . . . . .

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