Maths Day 2

Which of the following values is used as a summary measure for a sample, such as a sample mean?

• Population parameter

• Sample parameter

• Sample statistic

• Population mean

Which of the following is a branch of statistics?

• Descriptive statistics

• Inferential statistics

• Industry statistics

• Both A and B

The control charts and procedures of descriptive statistics which are used to enhance a procedure can be classified into which of these categories?

• Behavioural tools

• Serial tools

• Industry statistics

• Statistical tools

Which of the following can also be represented as sample statistics?

• Lowercase Greek letters

• Roman letters

• Associated Roman alphabets

• Uppercase Greek letters

Which measure of central tendency includes the magnitude of scores?

• Mean

• Mode

• Mediam

• Rang

Mode refers to the value within a series that occurs ________ number of times.

• Max

• Min

• Zero

• Infinite

The sum of deviations from the _________ is always zero.

• Median

• Mode

• Mean

• None of the above

Percentiles divide a series into ______.

• Ten equal parts

• Twenty equal parts

• Fifty equal parts

• Hundred equal parts

Which of the following is a characteristic of a mean?

• The sum of deviations from the mean is zero

• It minimises the sum of squared deviations

• It is affected by extreme score

• All of the above

Given X=20 and X2= -20. The arithmetic mean will be:

• Zero

• Infinity

• Impossible

• Difficult to tell