Statistical Evaluation of Data Flashcards

1
Q

Bar graph

A

uses a separate and distinct bar for each piece of information

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2
Q

Central tendency

A

A statistical measure that identifies a single score that defines the center of a distribution

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3
Q

Descriptive statistics

A

Statistical methods used to organize, summarize, and simplify the results obtained from research studies

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4
Q

Frequency distribution

A

visual displays that organise and present frequency counts so that the information can be interpreted more easily

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5
Q

Frequency polygons

A

a line graph of class frequency plotted against class midpoint

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6
Q

Histogram

A

a graph that shows the frequency of numerical data using rectangles

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7
Q

Inferential Statistics

A

Statistical methods used to determine when it is appropriate to generalize the results from a sample to an entire population

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8
Q

Mean

A

A measure of central tendency obtained by adding the individual scores and dividing the sum by the number of scores

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9
Q

Median

A

A measure of central tendency that identifies the score that divides the distribution in half so that 50% of the individuals have scores at or below the median

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10
Q

Mode

A

A measure of central tendency that identifies the most frequently occurring score in the distribution

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11
Q

Null hypothesis

A

no relationship exists between two sets of data or variables being analyzed.

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12
Q

Pie chart

A

divides into different sectors

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13
Q

Significance test

A

the difference between the sample mean and the population mean is statistically significant

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14
Q

Standard deviation

A

A measure of variability that describes the average distance from the mean; obtained by taking the square root of the variance

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15
Q

Variability

A

a quantitiative measure of the degree to which scores in a distribution are spread out or clustered together

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16
Q

Variance

A

A measure of variability obtained by computing the average squared distance from the mean