Statistics Quiz

What is the primary purpose of descriptive statistics?

• To test hypotheses about populations.

• To summarize and describe data sets.

• To calculate probabilities of random events.

• To make predictions about future events.

Which of the following is a measure of central tendency?

• Interquartile range

• Standard deviation

• Range

• Median

What does the term 'population' refer to in statistics?

• The average value of a data set.

• The entire group of interest in a study.

• The most frequently occurring value in a data set.

• A randomly selected subset of individuals.

Which of the following is an example of nominal data?

• Types of music genres (Pop, Rock, Jazz)

• Height of students

• Ranking in a marathon race

• Temperature in degrees Celsius

What type of measurement scale is used for classifying people's eye color?

• Ordinal

• Ratio

• Nominal

• Interval

What is the purpose of inferential statistics?

• To organize raw data into tables.

• To measure the spread of data points.

• To draw conclusions about a population based on a sample.

• To calculate the mean of a data set.

Which measure of central tendency is LEAST affected by outliers?

• Variance

• Range

• Mode

• Median

What is the range of a data set?

• The difference between the largest and smallest values.

• The middle value when the data is ordered.

• The most frequently occurring value.

• The average of all the values.

Which type of chart is best used to display the distribution of a categorical variable?

• Histogram

• Bar graph

• Pie chart

• Box plot

What is the branch of science that deals with the collection, analysis and interpretation of data?

• Calculus

• Physics

• Statistics

• Algebra