Statistics Review Quiz

Which of the following is a measure of central tendency?

• Mean, median, and mode

• Minimum, maximum, and range

• Range, variance, and standard deviation

• Percentile, quartile, and decile

What is the purpose of sampling techniques in statistics?

• To randomly choose a few individuals or observations from a population for no specific purpose.

• To increase the accuracy of the statistical analysis by including as many individuals or observations as possible.

• To ensure that the sample is representative of the entire population.

• To select a subset of individuals or observations from a larger population for making inferences or drawing conclusions about the entire population.

What is bias in statistics?

• A type of sampling error in statistics.

• A systematic error or deviation from the true value in data analysis or interpretation.

• A measure of central tendency in data analysis.

• A random error in data analysis or interpretation.

Which graph type is commonly used to show the relationship between two variables?

• Bar graph

• Line graph

• Scatter plot

• Histogram

What is the median of the following dataset: 11, 3, 8, 7, 12, 11?

• 7.5

• 9.5

• 8 and 7

• 8 and 11

Which sampling technique involves selecting every nth item from a population?

• Random sampling

• Cluster sampling

• Convenience sampling

• Systematic sampling

What is the range of the following dataset: 25, 10, 5, 15, 10?

• 30

• 50

• 10

• 20

Which of the following is a measure of spread in a dataset?

• Mode

• Median

• Mean

• Standard deviation

What is the purpose of graphs in statistics?

• To visually represent data and patterns

• To make the report look fancy

• To hide the data

• To confuse the reader

Which sampling technique involves dividing a population into subgroups and selecting a sample from each subgroup?

• Stratified sampling

• Convenience sampling

• Cluster sampling

• Random sampling