Statistics and Data Analysis Quiz

What is a boxplot?

• A type of histogram.

• A graphical summary of data based on the quartiles of a distribution.

• A measure of central tendency.

• A method for random sampling.

What type of data is identified by labels or names?

• Quantitative data

• Categorical data

• Time series data

• Cross-sectional data

What does the coefficient of variation measure?

• The mean of a dataset

• The relative variability of a dataset

• The median of a dataset

• The mode of a dataset

What does a correlation coefficient of +1 indicate?

• A strong positive linear relationship

• No linear relationship

• A strong negative linear relationship

• A weak positive linear relationship

What is covariance?

• A measure of central tendency

• A measure of linear association between two variables

• A type of categorical data

• A method for calculating the mean

What is cumulative frequency distribution?

• A tabular summary showing the number of data values less than or equal to each bin's upper limit

• A summary of categorical data

• A graphical representation of data

• A method for calculating variance

What is the mean?

• The sum of data values divided by the number of observations

• The most frequently occurring value

• The middle value in a dataset

• The largest value in a dataset

What is an outlier?

• A value that occurs most frequently

• An unusually large or small data value

• The average of a dataset

• A measure of variability

What does the range measure?

• The average of a dataset

• The largest value minus the smallest value

• The middle value in a dataset

• The standard deviation of a dataset

What is a sample?

• A subset of the population

• The entire population

• A type of quantitative data

• A method for calculating variance