Ch 1 lec

Question 1

characteristic that can take on different values for different persons, places or things. Example: Age, Gender, etc.

Answer 1

variable

Question 2

convey information regarding amount.

Answer 2

quaNtitative variable

Question 3

Some characteristics are not capable of being measured in the sense, and can be categorized only.

Answer 3

quaLitative variable

Question 4

quantitative variable that characterized by gaps or interruptions in the value that it can assume.

Answer 4

discrete variable

Question 5

quantitative variable that can assume any value within a specified relevant interval of values.

Answer 5

continuous variable

Question 6

When the values obtained arise as a result of chance factors, so that they cannot be exactly predicted in advance

Answer 6

random variable

Question 7

the largest collection of entities for which we have an interest at a particular time

Answer 7

population

Question 8

it is possible to count its individuals

Answer 8

finite population

Question 9

it is NOT possible to count the units contained in the population

Answer 9

infinite population

Question 10

a part of a population.

Answer 10

sample

Question 11

If a sample of size n is drawn from a population of size N in such a way that every possible sample of size n has the same chance of being selected

Answer 11

simple random sample

Question 12

each sample unit of the population has only one chance to be selected in the sample.

Answer 12

sampling without replacement

Question 13

every member of the population is available at each draw.

Answer 13

sampling with replacement

Question 14

a method of sampling that involves the division of a population into smaller groups

Answer 14

stratified random sample

Question 15

captures key population characteristics for populations with a variety of attributes

Answer 15

stratified random sampling over&raquo_space;> simple random sampling

Question 16

usually less time-consuming and easier to perform than simple random sampling.

Answer 16

systematic sampling procedure