STA630 Final Term Quiz 2 July 2023 by Miss Mehwish

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Q1. Easiest way to describe the numerical data of one variable is with a: Options:

1. Cumulative percentage distribution table.
2. Bar charts.
3. Bar charts.
4. Pie chart.

Correct option: b) Bar charts.

Q2. In random sampling, the probability of selecting an item from the population is: Options:

1. Undecided.
2. Zero.
3. Known.

Correct option: c) Known.

Q3. The group that does not receive the treatment is called:

1. None of the given options.
2. Experimental group.
3. Control group.
4. Independent group.

Correct option: c) Control group.

Q4. Which of the tables is based on cross-tabulation and the cases are organized in the table on the basis of two variables at the same time?

1. SPSS Table.
2. Frequency Distribution Table.
3. MINITAB Table.

Correct option: b) Frequency Distribution Table.

Q5. In stratified sampling, strata are:

1. Externally heterogeneous.
2. Externally heterogeneous.
3. Internally heterogeneous.
4. None of the given option.

Correct option: a) Externally heterogeneous.

Q6. To establish that variable X causes variable Y, all of the following conditions should be met, EXCEPT:

1. Other factors should possibly cause the change in the dependent variable Y.
2. Both X and Y should co-vary.
3. X (the presumed causal factor) should precede Y.
4. None of the given options.

Correct option: d) None of the given options.

Q7. A process of changing data from their original form to a format that is more suitable to perform data analysis is called as:

1. Information creation.
2. Data transformation.
3. Data transformation.
4. Information transformation.

Correct option: b) Data transformation.

Q8. A study that involves no researcher intervention is called:

1. An experimental study.
2. A non-involvement study.
3. A quasi-experimental study.
4. An observational study.

Correct option: d) An observational study.