chapter 2

Question 1

variable

Answer 1

is a general type of characteristic ( or type of status ) which can be different for each person or thing.
example - name , height , color , texture

Question 2

data

Answer 2

is the collection of all observations for a particular variable or variables , from one or more people or things

Question 3

statistics

Answer 3

the branch of mathematics that covers the methods and procedures in analyzing data

Question 4

inferential statistics

Answer 4

which involves analyzing interpreting and drawing conclusions based on data .

Question 5

population

Answer 5

is the collection of all individuals or items under consideration in a study

Question 6

census

Answer 6

is information (data) obtained from the entire population

Question 7

sample

Answer 7

is the part of a population from which information is actually collected

Question 8

parameters

Answer 8

is a numerical measurement describing some characteristics of a population

Question 9

statistic

Answer 9

is a numerical measurement describing some characteristics of a population

Question 10

qualitative variable

Answer 10

are variables which have values that are words , symbols or categories

Question 11

categorical values

Answer 11

gender , job title, letter grade , phone number , numbers , on football jersey

Question 12

quantitative variable

Answer 12

are variables which have values that are numerical values with a specific order and units
ex. heigh , weight , temperature , number of siblings , hours sleep

Question 13

random sampling

Answer 13

is using a random method to select from population

Question 14

representative sampling

Answer 14

which means that the sample has characteristics similar to the population being suited in order to avoid having bias