Research Statistics

What is the primary purpose of research?

• To memorize facts

• To entertain readers

• To discover new knowledge

• To confuse the audience

Which of the following is a characteristic of quantitative research?

• Uses interviews

• Focuses on themes

• Uses numbers and statistics

• Describes individual experiences

Which is NOT a method of data collection?

• Survey

• Experiment

• Hypothesis

• Observation

Which level of measurement ranks data but does not quantify differences?

• Nominal

• Ordinal

• Interval

• Ratio

What is the term for a summary measure computed from a population?

• Statistic

• Parameter

• Variable

• Sample

Which of the following measures of central tendency is affected by extreme values?

• Mean

• Mode

• Median

• Frequency

What does a frequency distribution table show?

• The average of the data

• How often does each score occurs

• The total population

• The standard deviation

Which graph is best used for showing parts of a whole?

• Histogram

• Line graph

• Bar graph

• Pie chart

In an experimental study, which variable is manipulated?

• Dependent variable

• Control variable

• Independent variable

• Extraneous variable

A data point that is significantly different from others is called:

• Mode

• Outlier

• Center

• Skew