Introduction

Question 1

What are the two types of statistics?

Answer 1

Descriptive and Inferential

Question 2

Descriptive Statistics

Answer 2

describe and summarize data

Question 3

Inferential statistics

Answer 3

the use of samples to make inferences about a population

Question 4

inferences

Answer 4

draw conclusions

Question 5

data set

Answer 5

data collected in study

Question 6

qualitative/categorical values

Answer 6

descrive an attribute (color)

Question 7

quantitative variable

Answer 7

are numerical values (number of students)

Question 8

what are two types of quantitative variables?

Answer 8

discrete variables and continuous variables

Question 9

discrete variables

Answer 9

can be counted

Question 10

continuos variables

Answer 10

value in any range, can be measured but not counted (speed)

Question 11

nominal

Answer 11

data can only be sorted by class

Question 12

mutually exclusive and exhaustive

Answer 12

mutually exclusive: cannot occur at the same time

exhaustive: includes all possible outcomes

Question 13

ordinal

Answer 13

sorted by class, but classes are ordered

Question 14

interval

Answer 14

measurement between data (but ratios don’t apply)

Question 15

cross-sectional data

Answer 15

data collected at the same time

Question 16

time series data

Answer 16

data collected over different periods of time

Question 17

experimental

Answer 17

one or more variables can be controlled

Question 18

observational studies

Answer 18

cannot control the variables