Midterm - Statistics

Question 1

Nominal Data

Answer 1

Classification of categorical variables without quantitative data, i.e. gender or color.

Question 2

Ordinal Data

Answer 2

Type of data in which values follow a natural order i.e. rating “excellent”, “good”, “average”, “bad”

Question 3

Categorical data

Answer 3

Represents categories or classes i.e. gender or color.
- Nominal Data
- Ordinal Data

Question 4

Numerical Data

Answer 4

Numbers representing data i.e. rain level, humidity.
- Discrete Data
- Continuous Data

Question 5

Discrete Data

Answer 5

Can only take certain values i.e. # of people in a group

Question 6

Continuous Data

Answer 6

Can have almost any numeric values i.e. height/weight

Question 7

Descriptive Statistics

Answer 7

Ways to explore observed data through visualizations and numerical summaries. Mean, median, mode, range, std dev, variance.

Question 8

Inferential Statistics

Answer 8

Modeling and estimation & allow for conclusions about a population given a sample.

Question 9

Sampling Methods

Answer 9

A process by which observational units are selected from the population to be included in the sample.
Random sampling, stratified sampling, cluster sampling

Question 10

Stratified Sampling