Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Data analysis I > theory > Flashcards

theory Flashcards

1
Q

Descriptive statistics

A

sample

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Inferential statistics

A

population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

confidence interval

A

95%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Nominal

A

categorisation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Ordinal

A

ranking

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

interval

A

equal intervals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Ratio

A

genuine 0 value

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

qualitative

A

nominal, ordinal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

quantitative

A

discrete, continous

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

continous

A

f.e. weight, height…

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

discrete or discontinous

A

f.e. number of sibling
(can’t be 1,2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

independent variable

A

causes sth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

dependent variable

A

affected by changes in the independent variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

predictor variable

A

variable thought to predict an outcome variable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

mediator

A

that thong leads to another, that to another… (pool)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

moderator

A

depending on the relationship between 2 variables it might change (switch)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

confounder

A

there is a correlation but it doesn´t demonsatrate causality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

manifest/indicator variables

A

can be directly observed and measured

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

latent variables

A

can’t be directly measured (anxiety)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

reverses

A

when the agreement level and the solitude level don’t have the same number (1-6)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

mode

A

most frequent value (the value that has more people on it)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

median

A

person in the middle of the distribution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

mean

A

sum of the scored dividen into the number of people (sensitive to outlyers)

24
Q

frequency distributions

A

number of people in each number of the tabale (ex. 1)

25
Q

x

A

possible values

26
Q

f

A

frequency

27
Q

fx

A

product of each possible value and its fequency

28
Q

fx2

A

product of the square of each possible value and its frequency

29
Q

F

A

accumulated frequency

30
Q

f/n

A

relative frequency given as a fraction of unity

31
Q

%

A

relative frequency

32
Q

accum. %

A

accumulated percentage

33
Q

summations

A

sum of all the values

34
Q

bar charts

A

separated, for discrete variables

35
Q

histograms

A

no spaces between them, for continous variables

36
Q

Qx

A

quartiles (only 3, they separate the sample into 4 quarters)

37
Q

Dx

A

deciles

38
Q

Px

A

percentiles

39
Q

number of percentiles

A

99 P1-P99

40
Q

o2

A

varianza

41
Q

o

A

desviación típica

42
Q

x(-arriba)

A

mean

43
Q

skewness de medio punto a 1

A

moderate skewed

44
Q

skewness de más de 1

A

markedly skewed

45
Q

kurtosis positiva

A

leptokurtic (variance + pequeña) sharp distribution

46
Q

kurtosis 0

A

campana de gauss: normal

47
Q

negative curtosis

A

platykurtic (varianza + grande) flattened distribution

48
Q

what are the z-scored used for

A

to buy standard deviations

49
Q

mean of stardardised scores

A

0 z-=0

50
Q

standard deviation of standardised scores

A

1

51
Q

N(x,y)

A

N: normal distribution, x: mean, y:SD

52
Q

alpha

A

márgen de error o level of significance

53
Q

1-alpha

A

confidence level

54
Q

t-value positiva

A

u1>u0

55
Q

t-value negativa

A

u1<u0

56
Q

cohen’s D

A

effect size

57
Q
A

Data analysis I (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions