Quiz 1.

Although a research study is typically conducted with a relatively small group of participants known as a _______, most researchers hope to generalize their results to a much larger group known as a _______.

1. Sample; Population
2. Population; Sample
3. Statistic; Sample
4. Parameter; population

Quiz 2.

When a researcher uses a random sample of 400 participants to make conclusions about a larger population, this is an example of:

1. Descriptive statistics
2. Inferential statistics
3. Demographics
4. Dependent variables

Quiz 3

Validity is:

1. A data item, such as characteristics, numbers, properties, or quantities, that can be measured or counted.
2. A measurement level with equal distances between the points and a zero-starting point.
3. The extent to which an idea or measurement is well-founded and an accurate representation of the real world.
4. Raw unorganized information from which conclusions can be made.

Quiz 4

Which of the following is an example of a discrete variable?

1. The age of each student in a health care class
2. The amount of time to solve a problem
3. The gender of each student in a health care class
4. The amount of weight lost for each freshman at a local college

Quiz 5

Level of measurement that defines the relationship between things and assigns an order or ranking to each thing is known as:

1. Interval
2. Ratio
3. Ordinal
4. Nominal

Quiz 6

A variable is considered:

1. A data item, such as characteristics, numbers, properties, or quantities, that can be measured or counted.
2. Statistics designed to allow the researcher to infer characteristics regarding a population from sample population.
3. A component of mathematics that looks at gathered data.
4. External and internal influences within a study that can affect the validity and reliability of the outcomes.

Quiz 7

The most common value in the data set is known as:

1. Mean
2. Mode
3. Median
4. Range

Quiz 8

External and internal influences within a study that can affect the validity and reliability of outcomes is called:

1. Continuous variables
2. Demographics
3. Bias
4. Standard deviation

Quiz 9

The variable that measures the outcome of an experiment is:

A. Extraneous variable descriptive statistics

B. Independent variable

C. Dependent variable

D. Nominal data

Quiz 10

A researcher conducts an experiment to determine whether moderate doses of St. John's Wort have any effect on memory for college students. For this study, what is the independent variable?

1. The amount of St. John's Wort given to each participant
2. The group of college students
3. The memory score for each participant
4. Cannot answer without more information