Data Science - Unit 2 Review

Sort the types of data:

Groups:

(a) Categorical

,

(b) Quantitative

• Flash drive capacity

• Car manufacturer

• Length of a garden hose

• Time taken to water the garden in minutes

• Daily high temperature

• Zip code

• Country of birth

• Recorded rainfall for a day

• Flower color

A February 2017 Gallup Poll question asked, "In politics, as of today, do you consider yourself a Republican, a Democrat, or an Independent?"

The possible responses were "Democrat", "Republican", "Independent", "Other", and "No Response".

What kind of variable is the response?

• Categorical

• Quantitative

Tags

CCSS.HSS.ID.B.5

A pharmaceutical company conducts an experiment in which a subject takes 100 mg of a substance orally.

The researchers measure how long it takes for half of the substance to exit the bloodstream.

What kind of variable is the response?

• Categorical

• Quantitative

A medical researcher measures the increase in heart rate of patients under a stress test.

What kind of variable is the response?

• Categorical

• Quantitative

Sort the types of quantitative data:

Groups:

(a) Discrete

,

(b) Continuous

• time it takes to run a race

• area of a circle

• volume of water in a glass

• the result of rolling dice

• the number of students in a class

• height of a sibling

• the population of a country

Tags

CCSS.6.NS.C.7

Type of sampling methods:

Groups:

(a) Random

,

(b) Nonrandom

• Stratified

• Voluntary

• Simple

• Cluster

• Convenience

• Systematic

The theme:

Random is​ ​ (a)  

Bias is​ ​ (b)  

• bad
• optional
• possible
• confusing
• ok
• good

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

CCSS.HSS.IC.B.4

CCSS.HSS.IC.B.5

Match the following by key concept:

• individuals not specifically asked

• Stratified Sample

• grouped by location

• Simple Random Sample

• each equally likely; lottery

• Voluntary Sample

• grouped by characteristic

• Systematic Sample

• intervals

• Cluster Sample

Tags

CCSS.HSS.IC.B.3

What type of sample:

Tony works for a political party. He stands at a busy street corner asking people whom they plan to vote for in the upcoming election.

• Simple Random Sample

• Stratified Sample

• Cluster Sample

• Systematic Sample

• Convenience Sample

Tags

CCSS.HSS.IC.B.3

What type of sample:

A mineral water company wants to find out why people choose a particular brand of mineral water. A mail-in response card is attached to the neck of every bottle of mineral water the company sells.

• Simple Random Sample

• Stratified Sample

• Cluster Sample

• Systematic Sample

• Voluntary Sample