Business-Statistics-and-Research-Methods MCQs

Commerce Objective Questions

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1072. Investigator in statistics is known as:

A. A person who checks the details of addresses of several respondents

B. A person who collects the information

C. A person who classifies the collected information

D. A person who fills the questionnaire

1073. Which of the following statement/s is/are true?

A. Descriptive statistics summarize the characteristics of a data set

B. Inferential statistics allow you to test a hypothesis or assess whether your data is generalizable to the broader population

C. Correlational statistics provide a description of the sample or population for their further analyses to explore the significance of their differences

D. All of the above

1074. If A $$ \subset $$ B and B $$ \subset $$ A, then:

1075. The standard deviation of sampling distribution is called.

A. Standard error

B. Probable error

C. Both A and B

D. None of these

1076. Time Reversibility Test is satisfied when

A. P₀₁ × P₁₀ = 0

B. P₀₁ × P₁₀ > 1

C. P₀₁ × P₁₀ = 1

D. P₀₁ × P₁₀ < 1

1077. If 'X' is a random variable, taking values 'X', probability of success and failure being 'p' and 'g' respectively and 'n' trials being conducted, then what is the probability that 'X' takes values 'x'? Use Binomial Distribution.

A. $$P\left( {X = x} \right) = {}^n{C_x}{p^x}{q^x}$$

B. $$P\left( {X = x} \right) = {}^n{C_x}{p^x}{q^{\left( {n - x} \right)}}$$

C. $$P\left( {X = x} \right) = {}^x{C_n}{q^x}{p^{\left( {n - x} \right)}}$$

D. $$P\left( {x = x} \right) = {}^x{C_n}{p^n}{q^x}$$

1078. The value of the median of an even discrete series will be

A. $${\left[ {\frac{{n + 1}}{2}} \right]^{{\text{th}}}}{\text{value}}$$

B. $${\left[ {\frac{n}{2}} \right]^{{\text{th}}}}{\text{value}}$$

C. $${5^{{\text{th}}}}{\text{ value}}$$

D. $${\left[ {\frac{{n + 1}}{4}} \right]^{{\text{th}}}}{\text{value}}$$

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