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Business Statistics and Research Methods
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Q481

A sampling frame is:

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Q482

The arithmetic mean of series 'A' is twice that of series 'B' and the standard deviation of series 'B' is twice that of series 'A'. The coefficient of variation of series 'A' in relation to that of series 'B' will be

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Q483

The recurrence relation between P(x) and P(x +1) in a Poisson distribution is given by

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Q484

The coefficient of correlation is always-

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Q485

If a measure characterizing a population is called a parameter then a similar measure of a sample is called:

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Q486

Which of the following should be included in a research proposal?

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Q487

The arithmetic mean of a frequency distribution is 5. If each frequency is multiplied by 5, the arithmetic mean will be

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Q488

Standard deviation is always . . . . . . . . range.

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Q489

Time Reversibility Test is satisfied when

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Q490

The scatter diagram of two variables X and Y gives an idea

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Q491

Investigator in statistics is known as:

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Q492

Let x =

\frac{9 - U}{3}

and y = V - 4 and the correlation coefficient between U and V is -0.93. Then the correlation coefficient between x and y will be

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Q493

Match the following from the given observations 15, 20, 25.

List-I	List-II
a. Arithmetic mean	1. 30
b. Sum of deviations from their arithmetic mean	2. 20
c. Range	3. 10

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Q494

The measure based on each value of series is

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Q495

Suppose the average weight of 9 persons is 50 kg. Average weight of the first 5 person is 45 kg, whereas average weight of the last 5 persons is 55 kg. then the weight of the 5^th member will be

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Q496

In which of the following forecasting technique, data obtained from past experience is analysed?

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Q497

Research methodology refers to the . . . . . . . . which are used to conduct an investigation.

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Q498

A relationship where the flow of the data points is best represented by a curve is called:

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Q499

The difference between sample statistic and its corresponding population parameter is:

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Q500

In a series, the value of arithmetic mean and median are 15 and 14 respectively the value of mode will be

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