Week 1 Flashcards

1
Q

What is Statistics?

A

A way of reasoning, along with a collection of tools and methods, designed to help us understand the world

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2
Q

What are statistics?

A

Quantities calculated from data

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3
Q

What are data?

A

Data are values, along with their context

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4
Q

Data analytics

A

the statistical analysis of large amounts of data in order to shift out the information needed for corporate planning

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5
Q

Transactional Data

A

Data collected for recording a company’s transactions

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6
Q

Business analytics

A

The process of using statistical analysis and modelling to drive business decisions

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7
Q

Data

A

Systematically recorded information, whether numbers or labels, together with its context

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8
Q

The Five W’s

A
Who
What 
When 
Where 
Why
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9
Q

Context

A

Tells us WHO was measured, WHAT was measured, HOW the data were collected, WHERE the data were collected, and WHEN and WHY the study was performed

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10
Q

Data Table

A

An arrangement of data in which each row represents a case and each column represents a variable

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11
Q

Case

A

An individual about whom or which we have data

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12
Q

Subject

A

A human experimental unit. Also called a participant

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13
Q

Participant

A

A human experimental unit. Also called a subject

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14
Q

Experimental Unit

A

An individual in a study for which or for whom data values are recorded

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15
Q

Record

A

Information about an individual in a database

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16
Q

Variable

A

Holds info about the same data for many cases

17
Q

Relational Database

A

A database that stores and retrieves information. Within the database, information is kept in data tables that can be “related” to each other

18
Q

Categorical Variable

A

A variable that names categories

19
Q

Quantitative Variable

A

A variable in which the numbers are values of measured quantities

20
Q

Does our value tell us the quantity of something is being measured?

A

YES - Variable is quantitative

NO - Variable is categorial

21
Q

Identifier Variable

A

A categorical variable that records a unique value for each case, used to name or identify it

22
Q

Nominal Variable

A

Can be applied to data whose values are used only to name categories

23
Q

Ordinal Variable

A

Can be applied to data for which some kind of order is available but for which measured variables are not available