Statistics for Business

Dispersion is the measure of the

• average of the items

• variation of the items

• central value of the items

• all the above

We can measure the cause and effect relationship by

• Time series analysis

• Correlation analysis

• Regression analysis

• Cross-sectional analysis

A score on a 15-point multiple choices quiz measuring knowledge of statistics is an example of a(n)

• nominal

• ordinal

• interval

• ratio

A descriptive measure of a sample is called __________.

• a census

• a parameter

• a statistic

• a sample

First quartile is also known as

• Lower quartile

• Upper quartile

• Median

• Geometric Mean

Find the ARITHMETIC MEAN

77, 83, 83, 85, 87, 90, 93, 94, 99, 99

• 77

• 89

• 90

• 86

Find the MODE of the numbers:

2, 4, 5, 5, 6, 8, 6, 2, 4, 6, 8

• 6

• 4

• 5

• 2

Which of the following is a measure of central tendency?

• Standard Deviation

• Variance

• Arithmetic Mean

• Mean Deviation

In a discrete data, what name is given to the item occurring most frequently?

• Median

• Mode

• Mean

• Frequency

What is the standard deviation for the data given:

• 4.88

• 5.18

• 4.08

• 9.18