PSC 012 - Data Visualization Flashcards

1
Q

the 3 essential elements of good info are…

A
  1. rich content
  2. inviting visuals
  3. sophisticated execution
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2
Q

the 4 essential steps to chart data are…

A
  1. research
  2. edit
  3. plot
  4. review
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3
Q

charting is…

A

putting series of numbers in close proximity to visually and narratively convey information

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4
Q

what is the upside of using numbers?

A

looks more precise/concrete

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5
Q

how do you make data speak for itself? why should you?

A

no distracting visuals, highlight the story the data is telling

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6
Q

if you supply the reference point…

A

you control the message

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7
Q

what is an example of a reference point?

A

answers may vary

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8
Q

in terms of charting, what is an example of a reference point?

A

answers may vary

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9
Q

if you are predicting future data, you should always…

A

define your arbitrary numbers

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10
Q

when is more data good? why is it bad later on?

A

during research phase, might drown out message/story

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11
Q

serif vs sanserif

A

serif has extra strokes, sanserif does not

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12
Q

what is type size and what is its unit of measurement?

A

height of print block for letter, points

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13
Q

what is leading?

A

vertical height of baseline to the baseline of the next line

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14
Q

nine rules of legibility

A
  1. bold and italics
  2. small and condensed
  3. color blocks and white text
  4. highly stylized
  5. hyphenation
  6. all caps
  7. tracking
  8. text at an angle
  9. leading
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15
Q

what is the formula for percent changes?

A

((old # - new #)/old #)*100%

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16
Q

percentages vs. percentage points vs. basis points

A

100%, 1.0, 100

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17
Q

why are baseline numbers important?

A

show which starting point a percentage point starts

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18
Q

absolute value vs. percentage changes in charts

A

shape is the same, percentage changes can show baselines

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19
Q

should you average percents? how

A

only if they share same base, otherwise recalculate

20
Q

how do you average percentages?

A

((c+d)/(e+f))*100%

21
Q

how do you calculate percentage of a percentage?

A

(a/100)*b%

22
Q

quantitative data

A

data about qualities, usually written form and open ended

23
Q

quantitative data

A

data of quantities, usually numbers, or standard categories

24
Q

give example of quantitative and qualitative data

A

answers may vary

25
Q

categorical data

A

usually in words, alike to qualitative data

26
Q

continuous data

A

usually in numbers, alike to quantitative data

27
Q

main effect, simple effect

A

effect of one predictor on one outcome

28
Q

additive relationship

A

???

29
Q

what makes an experiment an experiment?

A
  1. equivalent groups
  2. manipulate predictor
  3. measure outcome
30
Q

what is an example of an additive relationship? interactive relationship?

A

answers may vary

31
Q

outcome goes at the x-axis, true or false

A

false

32
Q

broken bars are good for outliers that are the point of the data. true or false

A

false

33
Q

if the mean and median are not on top of each other, it is likely the distribution is…

A

skewed

34
Q

is it possible to eliminate random sampling error from a sample of 6,000 people?

A

impossible, regardless of sample size

35
Q

what is the difference between quota and stratified sampling?

A

quota disregards proportions, stratified sampling takes proportion into consideration

36
Q

what are some types of representative sampling?

A

simple random sampling, stratified random sampling

37
Q

what are some types of non-representative sampling?

A

quota sampling, convenience sampling, voluntary response sampling

38
Q

as sample size BLANK, sampling error BLANK

A

increases, decreases

39
Q

what is sampling distribution?

A

the distribution of the averages of multiple samples of the same population

40
Q

what is the distribution of a sampling distribution?

A

normal

41
Q

how do you find SEM?

A

SD divided by the square root of the sample size

42
Q

what does it mean if most sampling means fall reasonably close to the population mean

A

68% falls within +/- 1 SD of the mean

43
Q

what is margin of error based on for categorical vs. continuous data?

A

categorical - sample size
continuous - sample size and variability

44
Q

how to find confidence level?

A

multiple SEM with a value from the confidence level chart

45
Q

SD will always be BLANK than SEM

A

greater

46
Q

SEM will always be BLANK than 95% confidence interval

A

less