Lesson 3: Population And Sample

Question 1

refers to the big group of collection of all traits under study or under consideration.

In addition, can be finite or infinite.

Answer 1

Population

Question 2

refers to a small part taken from the big group.

Answer 2

Sample

Question 3

should be representative of a population so that sample data can be used to draw conclusions about that population.

Answer 3

Sample

Question 4

must be collected using an appropriate method, such as random sampling. When sample data are collected using an inappropriate method, the data cannot be used
to draw conclusions about the population.

Answer 4

Sample data

Question 5

Is a numerical description of a population characteristics.

Answer 5

Parameter

Question 6

Is a numerical description of a sample characteristics.

Answer 6

Statistic

Question 7

Consists of information coming from observations, counts, measurements, or responses.

Answer 7

Data

Question 8

All data collected in a particular study are referred to as the

Answer 8

Data Set

Question 9

What are the 2 Main Sources of Data?

Answer 9

1. Primary Data
2. Secondary Data

Question 10

Are data that come from an original source, and are intended to answer specific research questions, can be taken by interview, mail-in questionnaire, survey, or experimentation.

Answer 10

Primary Data

Question 11

Are data that are taken from previously recorded data such as information in research conducted, industry financial statements, business periodicals, and government reports. It can also be taken electronically e.g. via internet websites and compact disc.

Answer 11

Secondary Data

Question 12

Is constant for a population.
Will not change from sample to sample

Answer 12

Population Parameter

Question 13

Can change from sample to sample

Answer 13

Sample Statistic