Midterm 1

Question 1

what is measurement

Answer 1

characteristic is defined and an instrument is selected to measure

Question 2

statistic

Answer 2

provides a way to present a conglomeration of a set of raw scores

Question 3

evaluation

Answer 3

take information and draw conglusion

Question 4

forms of evaluation

Answer 4

diagnostic evaluation
formative evaluation
summative evaluation

Question 5

continous scores

Answer 5

infinite number

measured with varying degree of accuracy

Question 6

discrete scores

Answer 6

limited to specific numbers

not expressed as fractions

Question 7

nominal measures

Answer 7

categorical
place people or things into categories
cannot be ranked along any dimensions

Question 8

ordinal measure

Answer 8

rank people or things along some dimensions

no comparisons across different group rankings

Question 9

interval measures

Answer 9

common unit of measurement

no true zero point

Question 10

ratio measures

Answer 10

common unit of measurement

have a true zero point

Question 11

standards for evaluation

Answer 11

norm-referenced standards

criterion-referenced standards

Question 12

norm-referenced standards

Answer 12

set by national, local, regional data collection

determined by the # that the score is better than

Question 13

criterion-referenced standards

Answer 13

set by national, regional and local data collection

passing criterion

Question 14

EX

Answer 14

sum of scores

Question 15

EX2

Answer 15

sum of the squared scores

Question 16

(EX) 2

Answer 16

sum of the scores squared

Question 17

n

N

Answer 17

sample

population

Question 18

frequency distribution

Answer 18

most basic for of describing scores

table

Question 19

X, f, cf in frequency distribution

Answer 19

X -> scores
f -> frequency
cf -> cumulative frequency

Question 20

normal curve

Answer 20

bisymmetrical curve

50% on one side 50% on the other side

Question 21

skewed curve

Answer 21

fewer scores to right or left of the curve

neg, skewed curve has fewer scores in neg direction

Question 22

leptokurtic curve

Answer 22

many people scored the same score

Question 23

platykuric curve

Answer 23

lots of scores have the same frequency

Question 24

3 measures of central tendency

Answer 24

mode
median
mean

Question 25

mode

Answer 25

most frequently occuring score

Question 26

median

Answer 26

50th percentile score | 50% falls below or above

Question 27

mean

Answer 27

best measure of central tendency | average

Question 28

what do measures of variability indicate

Answer 28

info about spread of the scores

Question 29

measures of variability

Answer 29

range - reported with mode semi-interquartile deviation (SID) - reported with median standard deviation - reported with mean

Question 30

what does standard deviation measure

Answer 30

variability and is reported with the mean

Question 31

what does the SID measure

Answer 31

variability of the middle 50% of scores

Question 32

what is norm referenced evaluation

Answer 32

comparison of your performance against a group

Question 33

norms

Answer 33

predetermined performance standards

Question 34

percentile ranks

Answer 34

describe the % of the group that falls below or abov the score

Question 35

which percentile rank is the middle score

Answer 35

1st percentile rank -> median

Question 36

what do percentile ranks tend to do

Answer 36

inflate the differences in the middle of the curve and deflate the differences in the extremes of the curve

Question 37

what kind of measures are percentile scores

Answer 37

ordinal measures

Question 38

what are standard scores used for

Answer 38

to standadize data

Question 39

standard scores

Answer 39

z and T scores

Question 40

Z scores

Answer 40

represent standard deviation units on the normal curve run standard deviation of 1 from -3 to 3

Question 41

T scores

Answer 41

mean = 50 run standard deviation of 10 from 20 - 80