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PSYC Exam 1 > PSYC 310 Ch 5 > Flashcards

PSYC 310 Ch 5 Flashcards

1
Q

Table with all of the scores listed along with the frequency with which each occurs

A

Frequency Distribution

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2
Q

Table with scores grouped into intervals and listed along with the frequency of scores in each interval

A

Class Interval Frequency Distribution

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3
Q

Categorical variable for which each value represents a discrete category

A

Qualitative Variable

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4
Q

Graphical representation of a frequency distribution in which vertical bars are centered above each category along the x-axis and are separated from each other by a space, indicating that the levels of the variable represent distinct, unrelated categories

A

Bar Graph

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5
Q

Variable with the scores representing a change in quantity

A

Quantitative Variable

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6
Q

Graphical representation of a frequency distribution in which vertical bars centered above scores on the x-axis touch each other to indicate that the scores on the variable represent related, increasing values

A

Histogram

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7
Q

Line graph of the frequencies of individual scores

A

Frequency Polygon

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8
Q

Numerical measures that describe a distribution by providing information on the central tendency, width, and the shape of the distribution

A

Descriptive Statistics

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9
Q

Number that characterizes the “middleness” of an entire distribution

A

Measure of Central Tendency

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10
Q

Average

A

Mean

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11
Q

Middle score in a distribution after the scores have been arranged from highest to lowest

A

Median

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12
Q

Score in a distribution that occurs the most amount of times

A

Mode

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13
Q

Number that indicates the degree to which scores are either clustered or spread out in a distribution

A

Measure of Variation

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14
Q

Difference between the lowest and highest scores in a distribution

A

Range

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15
Q

Average difference between the scores in the distribution and the mean or central point of the distribution; square root of the average squared deviation from the mean

A

Standard Deviation

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16
Q

Indicates the average difference between the scores in a distribution and the mean of the distribution; alternative to SD

A

Average Deviation

17
Q

Standard Deviation Squared

A

Variance

18
Q

Symmetrical, bell-shaped frequency polygon representing a normal distribution

A

Normal Curve

19
Q

Theoretical frequency distribution that has certain special characteristics

A

Normal Distribution

20
Q

How flat or peaked a normal distribution is

A

Kurtosis

21
Q

Normal curves that have peaks of medium height and distributions that are moderate in breadth

A

Mesokurtic

22
Q

Normal curves that are tall and thin, with only a few scores in the middle of the distribution having a high frequency

A

Leptokurtic

23
Q

Normal curves that are short and more dispersed (broader)

A

Platykurtic

24
Q

Distribution with peak to the left of the center point, and the tail extends towards the right, or in the positive direction

A

Positively Skewed Distribution

25
Q

Distribution with peak to the right of the center point, and the tail extends toward the left, or in the negative direction

A

Negatively Skewed Distribution

26
Q

Number that indicates how many standard deviation units a raw score is from the mean of a distribution

A

Z-score (Standard Score)

27
Q

Normal distribution with a mean of 0 and a standard deviation of 1

A

Standard Normal Distribution

28
Q

Expected relative frequency of a particular outcome

A

Probability

29
Q

Dividing the squared deviation scores by N-1 rather than N, you are using ______ of the population standard deviation.

A

Unbiased Estimator

29
Q

Score that indicates the percentage of people who scored at or below a given raw score

A

Percentile Rank

30
Q

Interval & ratio

A

Mean

31
Q

Ordinal, interval, & ratio

A

Median

32
Q

Nominal, ordinal, interval, or ratio

A

Mode

PSYC Exam 1 (3 decks)

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