Tag: business mathematics and statistics

Questions Related to business mathematics and statistics

A sample selected from a population consists which of the following? 

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. All units of the population

  2. Only $50\%$ of the units of the population

  3. Only $15\%$ of the units of the population

  4. Some units of the population

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Correct Option: A

Which of the following statements is true?

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. A sample in which a unit is selected after replacing the unit selected earlier in the population is called a sample without replacement.

  2. If a unit is to be destroyed during an inquiry then sample inquiry is not necessary but also inevitable.

  3. In any sampling method, the sample size is larger than the population size.

  4. Stratified random sampling is best if the population is homogeneous.

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Correct Option: A

Suppose we are using stratified sampling for a particular population and have divided it into strata of different sizes. How can we now make sample selection?

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. Select an equal number of units from each stratum at random.

  2. Draw unequal number of units from each stratum and weigh the result.

  3. Draw number of units from each stratum proportional to their size in the population

  4. None of the above

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Correct Option: A

Which of the following statement is true?

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. In stratified random sampling, all the units of the population have equal chance of being selected in the sample.

  2. In simple random sampling, all units of the population have equal chance of being selected in the sample.

  3. In any simpling method, the size does not depend on population.

  4. In systematic sampling, all units of the population have equal chance of being elected in the sample.

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Correct Option: A

Which sampling is affected the most if there is hidden periodicity in population?

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. simple random sampling

  2. Stratified random sampling

  3. Systematic sampling

  4. Both (b) & (c)

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Correct Option: A

A security checkpoint that cheks every vehicle entering into the mall is an example of which of the following?

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. Census inquiry

  2. Stratified random sampling

  3. Systematic sampling

  4. Simple random sampling

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Correct Option: A

State whether the following statements are 'true' or 'false':
Units on the sample should be selected within the same time duration.

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. True

  2. False

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Correct Option: A

State whether the following statements are 'true' or 'false':
A simpling plan that selects units from a population at uniform intervals in time, value or position it called stratified sampling.

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. True

  2. False

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Correct Option: A

State whether the following statements are 'true' or 'false':
A statistic is a characteristic of a population.

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. True

  2. False

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Correct Option: A

A parameter and statistic respectively are characteristics of which of the following?

business mathematics and statistics sampling methods population and sampling basic concepts of sampling sampling techniques and statistical inference

  1. Population and sample

  2. Sample and population

  3. Sample and sample

  4. Population and population

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Correct Option: A