SQQS1013 Elementary Statistics
INTRODUCTION
TO PROBABILITY
TO
3.1 INTRODUCTION
The principles of probability help bridge the worlds of
descriptive statistics and inferential statistics.
Probability can be defined as the chance of an event occurring or to

SQQS1013 Elementary Statistics
SAMPLING
DISTRIBUTIONS
DISTRIBUTION
6.1 POPULATION AND SAMPLING DISTRIBUTION
6.1.1 Population Distribution
Definition:
The probability distribution of the population data.
Example 1
Suppose there are only five students in an

SQQS1013 Elementary Statistics
5.1
SPECIAL
DISTRIBUTIONS
DISTRIBUTION
DISCRETE DISTRIBUTION
Consist of the values a random variable can assume and
the corresponding probabilities of the values.
The probabilities are determined theoretically or by observa

SQQS1013 Elementary Statistics
DISTRIBUTION OF
RANDOM
RANDOM
VARIABLES
VARIABLES
4.1 RANDOM VARIABLE
Definition:
A random variable is a variable whose value is determined by the
outcome of a random experiment
Supposed one family is randomly selected from

Chapter 3:
Gathering Information and Scanning the Environment
GENERAL CONCEPT QUESTIONS
Multiple Choice
1. The major responsibility for identifying significant marketplace changes falls to the
_.
a. U.S. Department of Labor
b. companys marketers
c. Americ

SQQS1013 Elementary Statistics
INTRODUCTION
TO
Statistics
1.1 WHAT IS STATISTICS?
The word statistics derives from classical Latin roots, status which means
state.
Statistics has become the universal language of the sciences.
As potential users of statist

SQQS1013 Elementary Statistics
DESCRIPTIVE
STATISTICS
STATISTICS
2.1 INTRODUCTION
Raw data - Data recorded in the sequence in
which there are
collected and before they are processed or ranked
Array data - Raw data that is arranged in ascending or
descendi