Data Science Unit 1 Review - Exploring Data

Match the following types of bias

• selection bias

• factors that can lead someone to respond falsely or inaccurately to a question

• nonresponse bias

• when participants are unable or unwilling to respond to a survey

• confirmation bias

• the tendency to interpret new evidence as confirmation of one's existing beliefs or theories

• response bias

• when individuals or groups in a study differ systematically from the population

• cherry picking

• only selecting evidence is presented in order to persuade the audience to accept a position

What is a collection of information gathered by observations, measurements, research or analysis? It may consist of facts, numbers, names, figures or even description of things.

​ (a)   data is data that represents amounts - either counted or measured

• Quantitative
• Categorical
• Continuous
• Discrete

​ (a)   data is data that represents measured amounts

• Quantitative
• Categorical
• Continuous
• Discrete

What type of bias is represented?

During presidential elections, people tend to seek information that paints the candidate they support in a positive light, while dismissing any information that paints them in a negative light.

• confirmation bias

• selection bias

• cherry picking

• response bias

• nonresponse bias

What type of bias is represented?

A job applicant is asked to take a personality test during the recruitment process. One of the questions is “Do you like meeting new people?”

The applicant thinks that, since this is a customer service job, the company is probably looking for someone who enjoys meeting new people. Despite being an introvert at heart, the applicant answers “yes” in an attempt to increase their chances of being hired.

• confirmation bias

• selection bias

• cherry picking

• response bias

• nonresponse bias

What are the six steps of the data cycle?

a

b

c

d

e

f

Data Communication

Process (Clean) Data

Create Data Visualizations

Data Modeling/Analysis

Collect Data

Form Question/Problem

Organize these options into the right categories

Groups:

(a) Categorical Data

,

(b) Quantitative Data

• blood type

• hair color

• length of song

• amount of gas in car

• social security numbers

• height of plants

• type of metal

• election results (% won)

Organize these options into the right categories

Groups:

(a) Discrete Data

,

(b) Continuous Data

• amount of links in a chain

• height of classmates

• number of books on shelf

• area of a circle

• distance from here to the moon

• points in a basketball game

• number of coins in pocket

Match the following type of data analysis

• bivariate

• analyzing three or more variables

• univariate

• analyzing one variable

• multivariate

• analyzing two variables