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SW 242 Stats > Midterm > Flashcards

Midterm Flashcards

1
Q

NOIR?

A

Nominal, Ordinal, Interval, Ratio

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2
Q

Nominal?

A

Differences among the response categories

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3
Q

Ordinal?

A

Differences among the response categories that can be ranked or ordered

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4
Q

Interval?

A

Differences among the response categories that can be rank ordered and have the exact amount of space between each response category

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5
Q

Ratio?

A

Differences among the response categories that can be rank ordered and have the same exact amount of space between each response category and has a zero reference point

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6
Q

Categorical/Discrete variables?

A

Nominal and Ordinal

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7
Q

Interval/Ratio

A

Continuous/Scale

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8
Q

Likert Scale?

A

Strongly Agree, Agree, Neutral, Disagree, Strongly Disagree

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9
Q

3 types of error?

A

Measurement, Sampling, Random

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10
Q

Letter?

A

Placeholder for numbers

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11
Q

Descriptive Stats?

A

Used to describe basic patterns within data

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12
Q

Hypothesis?

A

Statement of presumed relationship among two or more variables

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13
Q

Inferential Stats?

A

Used to make inferences about a population based on info that is contained within a sample

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14
Q

Frequency Distribution?

A

A listing of all observed scores for each category of a variable conducted for: organization of data, present data in the table of a graphic, catches coding errors

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15
Q

x=?

A

Variable

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16
Q

f=?

A

Frequency

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17
Q

p=?

A

Proportional Frequency

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18
Q

%=?

A

percentage Frequency

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19
Q

c%=?

A

Cumulative Frequency Frequency

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20
Q

N=?

A

Population Size

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21
Q

n=?

A

Sample Size

22
Q

Mode?

A

Most often occurring value or category in a distribution of values or categories

23
Q

Median?

A

Middle score in a ranked distribution of scores or values

24
Q

Mean?

A

Average of all values for a variable

25
Q

Outlier?

A

Extremely large score or small score in a distributions of values for a variable

26
Q

Skew?

A

Distortion of data in a positive or negative direction

27
Q

Variability?

A

Indicator of how much a set of data are spread out or are clustered together

28
Q

Range?

A

Distance between largest and smallest score and the distribution of values or scores

29
Q

Percentile?

A

Desired division outpoint in a distribution of scores and values

30
Q

Standard Deviation?

A

Average amount of any given value or score in a distribution of values or scores will deviate from the mean

31
Q

Degrees of freedom formula?

A

n - 1

32
Q

Population?

A

Total group of people being studied

33
Q

Sample?

A

Smaller number of people drawn from the population

34
Q

Probability?

A

Likelihood that a given event will occur with enough trials

35
Q

Four rules of probability?

A

Addition, Joint Occurrence, Multiplication, Act of Replacement

36
Q

Addition rule?

A

The probability for alternate events is equal to the sum of probabilities of the individual events. (this or that)

37
Q

Joint Occurrence rule?

A

If you want this or that are they linked or exclusive

38
Q

Multiplication rule?

A

Probability of the compound event equals to the multiple of the probabilities of the separate events. (this or then)

39
Q

Act of Replacement rule?

A

Account for whether each compound event is done with replacement locks the odds; without replacement alters the odds

40
Q

Gambler’s Fallacy?

A

A string of bad luck will eventually turn good

41
Q

P-value?

A

Likelihood that a statistical result would have been obtained by chance alone

42
Q

Statistical Signifigance?

A

If p value is less than .05

43
Q

Independant Variable?

A

X

44
Q

Dependent Variable?

A

Y

45
Q

Parsimony?

A

Explaining most amount of things with the least amount of words

46
Q

Tautology?

A

Statement that is true by definition

47
Q

Nominal Example?

A

Blood type, race, eye color

48
Q

Ordinal Example?

A

Education level, Income level, Satisfaction rating

49
Q

Interval Example?

A

Temperature, IQ test, GPA

50
Q

Ratio Example?

A

Height, Weight, Crime rate

SW 242 Stats (1 decks)

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