Flashcards in Intro Notes (measurement, descriptive statistics, normal distribution) Deck (57):

1

## What are the three central tendency statistics?

### Mean, median and mode

2

## What are the 4 types of dispersion?

###
1. Range,

2. Interquartile range,

3. variance, and

4. Standard Deviation

3

## The difference between the highest and lowest observation or measured value of a construct is which type of dispersion?

### Range

4

## The difference between the largest and smallest observation without correcting for rounding error in measurements is which type of Range?

### Exclusive Range

5

## The difference between the largest and smallest observation but correcting for rounding error in measurements is which type of Range?

### Inclusive Range

6

## value at 3rd quartile – value at 1st quartile or value at 75th percentile – value at 25th percentile is which type of dispersion?

### Interquartile Range

7

## Interquartilerange/2 • (Q3–Q1)/2 is which type of interquartile range?

### Semi-Interquartile range

8

## What is the best use for the semi-interquartile range?

### canbeusedasaroughtestfor symmetry of a distribution

9

## What are the two types of deviations within an interquartile range?

###
1. Quartile deviation

2. Coefficient of quartile deviation

10

##
Which of the two types of deviations within an interquartile range is the averageofthe range from Q1 to Q2 and of the range from Q2 to Q3?

Visual: ((Q2-Q1) + (Q3-Q2))/2

### Quartile Deviation

11

##
Which of the two types of deviations within an interquartile range is a measure of interquartile dispersion that is relative to the size and distribution of the observations and of the measurements of a construct?

Visual: (Q3 – Q1)/(Q3 + Q1)

### Coefficient of Quartile Variation

12

## What is the most common measure of dispersion/variability/ spread?

### Standard Deviation

13

## Which type of deviation is the square of the deviations from the mean?

### Standard Deviation

14

##
What does it mean to deviate?

### To differ from typical or average

15

## Statistically typical or normal takes the form of a measure of......

### Central Tendencies (Mean, median, mode)

16

## Statistically: If a person scores above the mean, the deviation yields a_______ number

### positive

17

## Statistically: If a person scores below the mean, the deviation yields a ___________ number

### negative

18

## Measure of typicality; typical score in a distribution

### Central Tendency

19

## What is Spread of the distribution

### Dispersion

20

## The most frequently occurring observation or measured value for a construct or phenomenon

### Mode

21

## Middleobservationor measured value of a construct in a distribution; 50th percentile

### Median

22

## Average score; typically the arithmetic average, but not always

### Mean

23

## When reporting measures of central tendency, a nominal scale of measurement will yield a _________ (Central Tendency).

###
Mode

24

## When reporting measures of central tendency, an ordinal scale of measurement will yield a _________ and _______(Central Tendencies).

### Mode and Median

25

## When reporting measures of central tendency, an interval scale of measurement will yield a _______, ________ and _______(Central Tendencies).

### Mode, Median, Mean*

26

## When reporting measures of central tendency, a ratio scale of measurement will yield a _______, ________ and _______(Central Tendencies).

### Mode, Median, Mean

27

## When reporting measures of dispersion, a interval scale of measurement will yield aprimary concern of ________ (Dispersion type)

### Standard deviation

28

### Standard deviation

29

## When reporting measures of dispersion, an ordinal scale of measurement will yield a primary concern of ________ (Dispersion type)

### Range

30

## When reporting measures of dispersion, a nominal scale of measurement will yield ____ _______ (Dispersion types)

### Pie Chart Dispersion types

31

## Think about the conceptual data of standard deviation, What happens if the sample size (the number of scores) increases?

### The standard deviation gets smaller!

32

## Think about the conceptual data of standard deviation, What happens if the sample size (the number of scores) decreases?

### The standard deviation gets bigger.

33

## Assigning values to according to a system (often in the form of an operation definition) that represents a model (often in the form of a theoretical or constitutive definition)

### Measurement

34

## Process of assigning values to indicants associated with a construct

### Measurement

35

## Event, occurrence, situation, or behavior that can be observed.

### Phenomenon

36

## An unobservable entity that functions as a label or as a causal entity for a constellation of behaviors or of phenomena

### Construct

37

## Definition describes how a construct is being measured

### Measurement

38

## Definition describes how a construct or a variable is being manipulated

### Experimental

39

## Descriptionofhowaconstructisinstantiatedina theoretical model

###
Theoretical definition

40

## What is the relation among the mean, median and mode in a normal distribution.

### They are all central tendencies to which the rest of the distribution is asymmetrical.

41

## T or F, The number of scores decreases as standard deviations from the mean increase.

### True

42

## T or F The normal distribution is asymmetric.

### True

43

## The number of scores between +/- one standard deviation is ___________

### 68%

44

## The number of scores between +/- two standard deviations is __________

### 95%

45

## From where (not whom) does the normal distribution come?_________________________________

### Mathematics

46

##
Placement of students in Special Education is a predictor of:

1. Graduation

2. Criminality

3. Employment

4. Divorced parents

###
1. Less likely to Graduate

2. More likely Criminality

3. low Employment

4. more likely divorced parents

47

## For the Wood Cock Johnson, the _______is the number of questions correct to be able to interpret the results; lowest five.

### Basal

48

##
For the Wood Cock Johnson, the _______is the number of questions wrong to be able to interpret the results; highest five missed.

### Ceiling

49

## For the Wood Cock Johnson, Read the _____(color), Look at the _________(color)

### Read the Blue (color), Look at the Lavendar (color)

50

## Four types of Normal probability distribution...

###
1. Normal curve

2. •Normal distribution

3. •Bell curve

4. •Gaussian distribution

51

##
What are predictable patterns based on standard deviation units?

### Normal Distribution

52

## Normal Distribution: Normal scores between 0 and -1...?

### 34%

53

## Normal Distribution: Normal scores between -1 and -2...?

### 13.5%

54

## Normal Distribution: Normal scores between -2 and -3...?

### 2.5%

55

## Normal Distribution: Normal scores between 0 and 1...?

### 34%

56

## Normal Distribution: Normal scores between 1 and 2...?

### 13.5%

57