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DC Statistics > 1.1 Vocab > Flashcards

1.1 Vocab Flashcards

1
Q

What is an individual?

A

People or objects in the study

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2
Q

What is a variable?

A

Characteristics of the individuals to be measured or observed.

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3
Q

What are the two types of Variables?

A

Quantitative and Qualitative

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4
Q

What is a Quantitative Variable?

A

Has a value or numerical measurement

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5
Q

What is a Qualitative Variable?

A

Describes an individual categorically or by placing info into groups.

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6
Q

What is another name for a Quantitative Variable?

A

Categorical variable

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7
Q

What is a population?

A

The data from every individual of interest - fixed or complete

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8
Q

What is a sample?

A

The data from only some of the population - incomplete and data can change due to different samples

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9
Q

What is a parameter?

A

A numerical measure that describes an aspect of a population

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10
Q

What is a statistic?

A

A numerical measure that describes an aspect of a sample

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11
Q

What are the Levels of Measurement?

A

Nominal, Ordinal, Interval, and Ratio

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12
Q

What is a nominal level of measurement?

A

Data that consists of names, labels, or categories - no order from smallest to largest

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13
Q

What is an ordinal level or measurement?

A

Data that can be arranged in order; however, differences between data values are meaningless.

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14
Q

What is an Interval level of measurement?

A

Data that can be arranged in order and differences are meaningful, no true zero

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15
Q

What is a Ratio level of measurement?

A

Data that that can be arranged in order and differences between data and ratios of values are meaningful. Have a true zero.

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16
Q

What level of measurement is temperature?

A

Interval

17
Q

What are descriptive statistics?

A

Statistics involving methods of organizing, picturing, and summarizing information from samples or populations.

18
Q

What are inferential statistics?

A

Statistics involving methods of using information from a sample to draw conclusions regarding the population.

19
Q

What is the average miles per gallon (mpg) for all new cars? Using Consumer
Reports, a random sample of 35 new cars gave an average of 21.1 mpg.
A) identify the variable.
B) is the variable quantitative or qualitative?
C) what is the implied population?

A

A) mpg
B) quantitative
C) gas mileage for all new cars

20
Q

Categorize: nominal, ordinal, interval, or ration.

Length of time to complete an exam

A

Ratio

21
Q

Categorize: nominal, ordinal, interval, or ration.

Time of first class

A

Interval

22
Q

Categorize: nominal, ordinal, interval, or ration.

major field of study

A

Nominal

23
Q

Categorize: nominal, ordinal, interval, or ration.

Course evaluation scale: poor, acceptable, good

A

Ordinal

24
Q

Categorize: nominal, ordinal, interval, or ration.

Score on last exam (based on 100 point scale)

A

Ratio

25
Q

Categorize: nominal, ordinal, interval, or ration.

Age of student

A

Ratio

26
Q

Categorize: nominal, ordinal, interval, or ration.

Salesperson’s performance: below average, average, above average

A

Ordinal

27
Q

Categorize: nominal, ordinal, interval, or ration.

Price of company’s stock

A

Ratio

28
Q

Categorize: nominal, ordinal, interval, or ration.

names of new products

A

Nominal

29
Q

Categorize: nominal, ordinal, interval, or ration.

Temperature (F) in an office

A

Interval

30
Q

Categorize: nominal, ordinal, interval, or ration.

Gross income for each of the past 5 years

A

Ratio

31
Q

Categorize: nominal, ordinal, interval, or ration.

Color of product packaging

A

Nominal

32
Q

Categorize: nominal, ordinal, interval, or ration.

Species of fish: perch, bass, pike, trout

A

Nominal

33
Q

Categorize: nominal, ordinal, interval, or ration.

Cost of rod and reel

A

Ratio

34
Q

Categorize: nominal, ordinal, interval, or ration.

Time of return home

A

Interval

35
Q

Categorize: nominal, ordinal, interval, or ration.

Guidebook rating of fishing area: poor, fair, good

A

Ordinal

36
Q

Categorize: nominal, ordinal, interval, or ration.

Number of fish caught

A

Ratio

37
Q

Categorize: nominal, ordinal, interval, or ration.

Temperature of water

A

Interval

DC Statistics (3 decks)

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