QUIZ 14 - MR

What is statistics?

• The science of collecting, organizing, analysing, interpreting, and presenting data

• The branch of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true.

• The science of organizing and analysing data based on non-quantifiable information

• Any characteristics, number, or quantity that can be measured or counted

The tendency to favor the selection of certain sample elements over others is the definition of

• Sample error

• Sample bias

• Selection error

• Tendency bias

Which of the following are all central tendency measures?

• Mean, mode and median

• Range, percentiles and variance

• Variance, standard deviation and range

• Mean, variance and range

Which of the following are all dispersion measures?

• Mean, mode and median

• Range, variance and standard deviation

• Median, standard deviation and range

• Mean, variance and range

The standard deviation is

• The square root of the variance

• The average of the squared differences of the observations from their mean

• The sampling error

• The difference between the mean and the mode