Chapter 3: Statistic Refresher

Question 1

It is the act of assigning numbers or symbols to characteristics of things (people, events, whatever) according to rules

Answer 1

Measurement

Question 2

A scale that is used to measure a variable that can theoretically divided.

Answer 2

Continuous Scale

Question 3

It is the scale used to measure a variable that cannot be theoretically divided.

Answer 3

Discrete Scale

Question 4

this is the degree to which the test score/measurement may be wrong, considering other factors like the state of the test taker (sickly or healthy) the venue of the test, the test itself, etc

Answer 4

error

Question 5

A scale of measurement with no ranking but with classification

Answer 5

Nominal Scales

Question 6

A scale of measurement, like nominal scales, permits categorization. The difference is there is a rank ordering for each characteristic response

Answer 6

Ordinal Scales

Question 7

A scale of measurement that has the features of nominal and ordinal scales plus it contains equal intervals between variables. It has no absolute zero point; it is theoretically possible to have negative values on this scale.

Answer 7

Interval scales

Question 8

A scale of measurement that has all properties of nominal, ordinal; and interval and has a true zero point. Meaning if the scale points to zero, the variable does not exist.

Answer 8

Ratio

Question 9

Low IQ: 85 below
Average IQ: 86-114
High IQ: 115 above

What type of scale of measurement is these data above?

Answer 9

Ordinal Scale

Question 10

What type of scale of measurement is this?

Religion, Gender, Subjects

Answer 10

Nominal Scale

Question 11

This term states that if the scale points to zero the variable does not exist

Answer 11

Has true zero-point

Question 12

Ang mga psych test ay represented in an_____ pero kapag iprepresent sa mga tao/client lalo na sa walang background sa stats______siya in nature ipe-present

Answer 12

interval manner

ordinal

Question 13

This is the field of statistics that is used to describe our data

Answer 13

DESCRIPTIVE STATISTICS

Question 14

It is the unmodified accounting of the performance of the test taker in the test

Answer 14

Raw score

Question 15

It is a table of scores and how many times they occurred. They can be presented in many ways.

Answer 15

Frequency Distribution

Question 16

Graphical representation of data

Answer 16

HISTOGRAM or GRAPH

Question 17

Is a statistic that indicates the average or midmost score between the extreme score in a distribution

Answer 17

Central Tendency

Question 18

It is referred to in everyday language as “AVERAGE” The ___ considers the actual numerical value of every score.

Answer 18

Mean

Question 19

defined as the middle score in distribution, is another commonly used measure of central tendency because it is not affected by outliers score

Answer 19

median

Question 20

The most frequently occurring score in a distribution of scores

Answer 20

mode

Question 21

Kapag hindi magkakalayo ang ______, most likely normal yung sample

Answer 21

central tendencies

Question 22

What will you use if you want to describe the data of a group?

Answer 22

Central tendencies

Question 23

It is an indication of how scores in a distribution are scattered or disperse

Answer 23

Variability

Question 24

A type of variance where the scores have a high variability

Answer 24

High variance

Question 25

A type of variance where the scores are so close to each other

Answer 25

Low Variance

Question 26

It is equal to the difference between the highest and lowest score. Quick but gross description of the spread of scores.

Answer 26

Range

Question 27

equal to the square root of the average squared deviation about the mean

Answer 27

Standard Deviation

Question 28

a very useful measure of variation because each score’s distance from the mean of the distribution is factored into its computation

Answer 28

Standard Deviation

Question 29

equal to the arithmetic mean of the squares of the difference between the scores in a distribution and their mean square of SD

Answer 29

variance

Question 30

Distance of each score from the mean

Answer 30

Deviation

Question 31

The average distance of the scores from the mean

Answer 31

Standard Deviation

Question 32

The greater the value of the variance of _______the more that the data/numbers are scattered or far away from each other in a given distribution.

Answer 32

standard deviation

Question 33

nature and extent to which score symmetry of a data is absent

Answer 33

skewness

Question 34

This skew means few high scorers and most scores are on the lower end -yung central tendency nasa lower end spectrum ng scores

Answer 34

Positive skew/ Right Skew

Question 35

If the data of the final exam of your students is in positive skew what does that mean?

Answer 35

Mahirap yung test, di effective yung nagturo, maraming low scorers

Question 36

This type of skew means few low scorers, most scores are on the higher end Central tendency ay nasa positive side, yung skew nasa negative side

Answer 36

Negative Skew/ Left Skew

Question 37

It is a type of kurtosis in which scores are distributed almost equally through the higher and lower end., meaning malaki yung variance ng score -iba-iba yung scores, wala nang similarities at hindi na ma-describe yung performance ng group

Answer 37

PLATYKURTIC-

Question 38

It is a type of kurtosis in which scores are mostly center, with few higher scores in the higher or lower end: pare-parehas lang yung scores -Masyadong naka squeezer yung performance ng group sa isang score, masyadong homogenous

Answer 38

LEPTOKURTIC

Question 39

It is the ideal kurtosis. Sakto lang, well distributed at the same time may degree of sameness

Answer 39

MESOKURTIC

Question 40

Kapag ang sample is symmetrical, meaning mesokurtic, and then yung skewness absent and meaning perfectly balanced ito ay may properties ng_____

Answer 40

NORMAL CURVE

Question 41

It is the raw score that has been converted from one scale to another scale

Answer 41

Standard score

Question 42

set of scores na may sariling pre determined mean and may pre determined standard deviation

Answer 42

standard scores

Question 43

one of the famous standard scores is____?

Answer 43

Z-scores

Question 44

It is a measure of the proportion of examinees who answered the item correctly.

Answer 44

item difficulty

Question 45

The higher the difficulty, the ____ the item.

Answer 45

Easier

Question 46

Item difficulty index should range from

Answer 46

0.30 - 0.70

Question 47

An item with difficulty index higher than .70 means____

Answer 47

item is too easy

Question 48

An item with difficulty index lower than .30 means___

Answer 48

item is too difficult

Question 49

True or false. The higher the difficulty index the better

Answer 49

False

Question 50

True or false. The higher item difficulty means an item is easy

Answer 50

True

Question 51

What is the symbol of item difficulty?

Answer 51

(p)

Question 52

This indicate how adequately an item separates or discriminates between high scorers and low scorers on an entire test.

Answer 52

Item Discrimination

Question 53

compares performance on a particular item with performance in the upper and lower regions of a distribution of continuous test scores.

Answer 53

Item Discrimination

Question 54

In item discrimination, they posses the target ability.

Answer 54

Upper group AKA masters

Question 55

In item discrimination, they do not posses the target ability

Answer 55

Lower group AKA non-masters

Question 56

The item-discrimination index should be at least ____

Answer 56

.30

Question 57

the item is easy for the upper group and difficult for the lower group.-

Answer 57

High item discrimination index

Question 58

Both the lower group and the upper group are getting the correct answer in the item

Answer 58

Low item discrimination index

Question 59

The item is difficult for the upper group but easy for the lower group

Answer 59

Negative item discrimination index