Unit 1: Data Ethics
Unit 2: The Normal Curve & Standard Scores
Unit 3: Chi Square & Reliability / Validity
Unit 4: t-test
100
taking a "fake" medicine causes a person to feel better because of a psychological expectation to improve
placebo effect
100
If a student earns an 85 on a test, but it is the lowest score in the class, what letter grade would the student receive after a curve?
F
100
A personality test is designed to determine how well two people match romantically. r = 0.8. What is the predictive validity / explained variance as a percent?
64%
100
Find obtained t, to the nearest thousandth. You may use a calculator.
-.478
200
These are the three possible costs the considered when weighing whether to approve or deny an experiment
stress, psychological harm & physical harm
200
Z = -2, find the T score.
30
200
Part a. List the observed frequencies.
Part b. State N.
a. 23, 6, 1, 23
b. N = 53
200
Which significance test can be used to analyze 2 quantitative variables?
correlation
300
This group receives a placebo in a clinical trial
control group
300
SAT = 800, find the Z score.
Z = +3
300
If p = .03, the confidence level is ___%. Fill in the blank AND state whether the variables are or are not significantly related
97% and significantly related
300
List the most appropriate significance test for analysis of:
political party and race
chi square test
400
This 40-year study of Black males led to the formation of the IRB
Tuskegee Syphilis Study
400
A student earns an 76 on a test and a Z score of zero. What was the mean?
76
400
Determine the value of obtained chi squared, to the nearest hundredth.
23 females are on permanent lunch detention (for failing 2 more classes marking period 1)
181 females are not on permanent lunch detention
52 males are on permanent lunch detention (for failing 2 more classes marking period 1)
145 males are not on permanent lunch detention
15.07
400
45 women and 40 men are included in a survey. Find df and critical t using the chart below.
df = 39
critical t = 2.042
500
Participants in this study were asked to administer [fake] shocks to a learner.
Milgram Obedience Experiment
500
Draw a normal curve. Label the mean, +1 SD, +2 SD, -1 SD and -2 SD. Fill in the percentages
500
What is the difference between reliable and valid?
Reliabile: consistent
Valid: measures what it's supposed to
500
For which significance test is each of these keywords used?
a. no relationship
b. no difference
c. not related
a. correlation
b. t-test or one-way ANOVA
c. chi square test