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Stats > Stats vocabulary > Flashcards

Stats vocabulary Flashcards

1
Q

50% data below 50% above

A

median

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2
Q

treatments, can have control, can show cause and effect
data collection

A

experimental study

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3
Q

a collection of stuff

A

data

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4
Q

look right now, ask
observation

A

cross section

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5
Q

Subject does not know treatment to prevent bias (placebo)
Improve experiment

A

blinding

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6
Q

repeat over and over
Improve experiment

A

Replicate

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7
Q

fake treatment, need to fail to show real treatment works
Improve experiment

A

Placebo

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8
Q

mode is best if?

A

a outcome is very common

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9
Q

average distance from mean
data

A

standard deviation

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10
Q

relationship between the problems

A

correlation

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11
Q

in order spacing (no true zero)
level of measure

A

interval

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12
Q

to the left low value
shape of data

A

left skewed

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13
Q

order but no spacing
Level of measure

A

ordinal

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14
Q

look in future, wait and see
observation

A

prospective

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15
Q

less than 30

A

small sample

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16
Q

data collector cares about outcome
intro bias

A

bad source

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17
Q

what to expect

A

measures of center

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18
Q

wrong # of people
intro bias

A

under coverage

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19
Q

really far away from the rest of the data

A

outlier

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20
Q

how many/ how much

A

quantitive

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21
Q

high value data
shape of value

A

right skewed

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22
Q

no rational reason behind
Level of measure

A

imposed

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23
Q

many ask but few respond
intro bias

A

non-response

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24
Q

choose every nth
non srs

A

systematic

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25
Q

all of something

A

population

26
Q

standard dev squared- s^2, σ^2

A

variance

27
Q

break into groups and choose all of some
non srs

A

cluster

28
Q

average of the data

A

mean

29
Q

split into smaller groups and add some control, smaller experiments, some bias
Improve experiment

A

block

30
Q

ask but do not measure

A

reported results

31
Q

a group is left out (using tcu students as rep of Texas)
intro bias

A

missing data

32
Q

lots of things

A

confounding

33
Q

just looking, always having lurking variables, always have confounding things (lots of things)
data collection

A

observational study

34
Q

asked wrong group
intro bias

A

bad frame

35
Q

no space (4, 4.1, 4.2)

A

continuos

36
Q

most common outcome

A

mode

37
Q

no true order
Level of measure

A

nominal

38
Q

break into groups and choose some of all
non srs

A

stratified

39
Q

look in the past, look it up
observation

A

retrospective

40
Q

25 % above, 75 % below, or 75% above 25% below
data

A

quartiles

41
Q

numbers tell us what it is

A

qualitive

42
Q

a lot with values in the middle
shape of data

A

uniform

43
Q

Q3-Q1

A

IQR

44
Q

some

A

sample

45
Q

even uncontrolled variables
Improve experiment

A

randomize

46
Q

subject and data recorder do not know treatments
Improve experiment

A

Double blinding

47
Q

do you want a high paying job or a fun job? (likely choose first) Do you wanna be punched or kicked? (likely choose 2nd)

A

order of questions

48
Q

easy to get
non-srs

A

convenience

49
Q

mean is best if?

A

there are no outliers

50
Q

have breaks (1, 2, 3)

A

discrete

51
Q

lurking variables made the same to avoid confounding
Improve experiment

A

Control

52
Q

Maximum- minimum
data

A

Range

53
Q

median is best if?

A

there are outliers

54
Q

data is given without being asked
intro bias

A

voluntary response

55
Q

ask but only one right answer

A

loaded question

56
Q

big deal

A

practically

57
Q

in order with spacing
level of measure

A

ratio

58
Q

every individual is likely to be selected

A

Simple random sample (SRS)

59
Q

same on the left as is on the right
shape of data

A

symmetric

60
Q

rare

A

statistically

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