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AP Stats Exam > Graphical Displays > Flashcards

Graphical Displays Flashcards

0
Q

Bar graphs are commonly used to…

A

Compare the sizes of categories

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1
Q

Dot plots are useful with regard to….

A

Categorical (qualitative) variables

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2
Q

Data for bar graphs is measured in….

A

Percents or frequencies

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3
Q

Relative frequencies are used when…

A

Comparing distributions of different size populations

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4
Q

Three keys to describing a distribution:

A
  1. Shape
  2. Center
  3. Spread
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5
Q

Ways to display quantitative data:

A

Histograms
Cumulative relative frequency plots (ogives)
Stemplots

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6
Q

In a histogram, relative area corresponds to…

A

Relative frequency

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7
Q

Stemplots

A

Give exact values, unlike most histograms

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8
Q

The center

A

Separates values roughly in half

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9
Q

Spread

A

Scope of values from smallest to largest

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10
Q

Clusters show…

A

Natural subgroups

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11
Q

Gals show….

A

Holes where no values fall

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12
Q

Extreme values are called…..

A

Outliers

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13
Q

Modes

A

Values with peaks above them

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14
Q

Symmetric distribution

A

One in which the two halves are mirror images of each other

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15
Q

Distribution skewed right

A

Spreads far and thinly toward higher values

Has a cumulative frequency out that rises steeply at first and then slows later

16
Q

Distribution skewed left

A

Spreads far and thinly toward lower values

Has a cumulative frequency out that rises slowly at first and then steeply later

17
Q

Bell-shaped distribution

A

Is symmetric with a center mound and two sloping tails

18
Q

A distribution is uniform is….

A

Its histogram is a horizontal line

19
Q

Cumulative relative frequency plot

A

Visually show sum frequencies

20
Q

Both dotplots and stem plots can show…

A

Symmetry
Gaps
Clusters
Outliers

21
Q

All normal curves are…

A

Bell-shaped and symmetric

*but not all bell-shaped and symmetric curves are normal

22
Q

Households incomes and home proves tend to be..,

A

Skewed right

AP Stats Exam (14 decks)

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