test and measurements 2

In a fairly large, normal distribution with a mean of 15.0, two- thirds of the cases fall between the score points 12.5 and 17.5. The standard deviation can be estimated to be close to a. 1.0 b. 2.5 c. 4.0 d. 6.25

2.5

if a normal distribution of scores has a mean of 47 and a standard deviation of 11, what range of values would contain 99.74% of the scores? a. 14 to 80 b. 25 to 69 c. 30 to 64 d. 36 to 58

14 to 80

If a normal distribution of scores has a mean of 70 and a standard deviation of 10, approximately what percentage of students scored below 60? a. 2.5 b. 16.0 c. 50.0 d. 84.0 e. 97.5

16

The mean on a test was 50 and the standard deviation was 20. What percent of people scored between a z score of .80 and a raw score of 68? a. 2.78 b. 18.41 c. 21.19 d. 28.81

2.78

M ± 1s M ± 2s M ± 3s

68.26% 95.44% 99.74%

. The mean on a test was 200 and the standard deviation was 20 points. What percent of people scored less than 170? Round to the nearest whole number. a. 7 b. 13 c. 43 d. 87

7

If everyone in a classroom scores the same on an exam, the variance is a. 0 b.1 c. −1 d. unable to determine

. 0

Measurement on the nominal scale is accurately described as quantitative measurement. a. true b. false

. false

. In a normal distribution, the mean divided by the median equals a. 0.00 b. 100 c. 1 d. a figure that cannot be calculated

1

If IQ scores are normally distributed with a mean of 100 and a standard deviation of 15, what percentage of the population has IQs between 85 and 130? a. 34.13 b. 68.26 c. 81.85 d. 95.44

81.85

classifying subjects as athletes or nonathletes, male or female, from New York or Hawaii, is an example of which measurement scale? a. nominal scale b. ordinal scale c. interval scale d. ratio scale

nominal

The larger the standard deviation, the more homogeneous the distribution. a. true b. false

false

in a bell curve ______ declines in a predictable manner as scores deviate farther and farther from the curve

frequency

independent variable vs. dependent variable?

independent: manipulated or controlled dependent: variable being tested or measured

if there is a ______________ that means the Independent variable does not predict the dependent variable

lack of fit

The most stable measure of central tendency with interval data is the

mean

most stable and reliable but it may not be representative of skewed data sets

mean

in a kurtosis graph all the values have the same what?

mean, median and mode

most unstable measure of central tendency; easily obtained

mode

most stable measure of variability

variance

most fundamental standard score?

z-score

Lining students up according to height without actually measuring height represents what level of measurement? a. nominal b. ordinal c. interval d. ratio

. ordinal

in a bell curve where are the mean, median and mode?

centered on the curve

Kelly's T score was 60. What is her z score?

1.0

Karen's T score was 65. What is her z score? a. 0.5 b. 1.5 c. 2.0 d. need more information

1.5

The mean on a test is 200 and the variance was 400 points. What percentage of people scored less than 170? Round to the nearest whole number. a. 7 b. 13 c. 43 d. 87

7

If a normal distribution of scores has a mean of 70 and a standard deviation of 10, what score does it take to be 2 standard deviations above the mean? a. 50 b. 60 c. 80 d. 90

90

Measurement

Act of assessing, usually results in quantifying characteristics

mean of t score? SD of t score?

Mean: always 50 standard deviation: always 10

Kinesmetrics

Measurement and evaluation in Kinesiology

john scored at the 45th percentile on the course midterm. Which interpretation of his score is the best? a. 45% of the people tested exceeded his score b. John got 45% of the items correct. c. John had a better score than 45% of the people tested. d. More than one of these statements is an appropriate interpretation.

c. John had a better score than 45% of the people tested.

measuring the central area of the data set, where the scores tend to center

central tendency

the mean is affected by the ______________________ of every score in the data set

numerical value

The level of measurement that, at best, can rank subjects is

ordinal

moderate vs. vigorous activity is an example of

ordinal

lots of variation--> values are widely scattered ; more heterogenous

platykuritc

measurement=

quantifiable