Lesson 1

Question 1

Statistics is

Answer 1

the science of collecting, analyzing, and drawing conclusion from data

Question 2

A population is

Answer 2

the collection of individuals or objects of interest

Question 3

the science of collecting, analyzing, and drawing conclusion from data

Answer 3

statistics

Question 4

the collection of individuals or objects of interest being studied to answer a question

Answer 4

population

Question 5

Recording all desired information on each unit/member in a population

Answer 5

taking a census

Question 6

sample/subset

Answer 6

the representative percentage of the population that was utilized to represent the population

Question 7

the branch of statistics focused on summarizing and displaying data

Answer 7

descriptive statistics

Question 8

the branch of statistics that uses information gathered from a sample to make statements about the population that was censured.

Answer 8

inferential statistics

Question 9

Tables, graphs, and numerical summaries

Answer 9

appropriate organization and summation of data collected from a appropriate data source.

Question 10

a characteristic that may be record for each unit in the population

Answer 10

variable

Question 11

Observation collected regarding only one variable from each unit in the sample or population

Answer 11

univariate data set

Question 12

Observations collected regarding two variables from each unit in the sample or population

Answer 12

bivariate data set

Question 13

observation s collected on two or more variables from each unit in the sample population

Answer 13

multivariate data set.

Question 14

The variable whose outcome is of primary interest

Answer 14

response variable or outcome variable

Question 15

The variable that may explain or cause differences in the response variable

Answer 15

explanatory variable

Question 16

observation for which the variable is a number

Answer 16

numerical ( or quantitative) variables

Question 17

A numerical values is ________ if the set of possible values that may be observed has an uncountable number of points

Answer 17

continuous

Question 18

A numerical value is _________ if the set of possible values that may be observed has a countable number of points.

Answer 18

discreet

Question 19

A qualitative or categorical variable - a number can be associated but does not change the nature of the variable-

Answer 19

it is an either or situation ??? boy or girl

red or blue or green…..

Question 20

numeric: discrete or continuous; categorical

a persons’s dominant hand

Answer 20

categorical

Question 21

numeric: discrete or continuous; categorical

the distance a car travels on a tank of gas

Answer 21

numeric and continuous

Question 22

numeric: discrete or continuous; categorical

the color of a person’s eyes

Answer 22

categorical

Question 23

numeric: discrete or continuous; categorical

the number of cc transactions at a grocery store during a 24 hour period

Answer 23

numeric and continuous

Question 24

numeric: discrete or continuous; categorical

the amount of coffee dispensed by a particular machine

Answer 24

numeric and continuous

Question 25

numeric: discrete or continuous; categorical

the manufacturer of the next car through a specified intersection

Answer 25

categorical

Question 26

numeric: discrete or continuous; categorical
the number of students in a class of 56 who turn in a term project early

Answer 26

numeric and discreet