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If jack has 3 does of Caffeine including 0, 100 and 200 and is using a between subjects design what should he use?
What is ANOVA between subjects
KA is studying the relationship between high pitch voices and attractiveness. Subjects listen to a voice then rate it on a likert scale. What test should be used? (Assume a normal distribution)
What is Pearson r
Jess just calculated her t which was t(45) =4.55, p< 0.05. Did Jess reject her null hypo. or not? Can she have a type I or II error?
What is yes only type I which is 5% chance..
If TJ's null hypothesis is men=women (u=u) in pain threshold what is his scientific?
What is women will performer differently than men
The mean and SD are___.
What is descriptive statistics
The teacher tells her class the exam scores were negatively skewed which means__
What is the mean was less than the median
When should you use the median instead of the mean to describe your data.
What is when calculating extreme scores like housing prices.
JJ thinks he did better on the math final than his chemistry since he received a 80/100 on the math final & only a 70/100 on his chemistry final. What would you tell JJ to do if he wants to truly know what exam he did better on?
What is convert each into a standard or z-score. Ask the professor for the mean & SD.
In statistics we always test our scientific hypothesis?
What is false
We can only reject the null hypothesis
If you see this written in a results section.. t(28) = 6.78, p<0.05. What can you conclude? (hint was it significant)
What is there is an effect of your indep. Variable and you rejected the null hypothesis
Jose is studying the effects of Marijuana on creativity but there is not a lot of research done in this area therefore should he use a directional or nondirectional tests.
What is nondirectional
Dr. Hue has 3 new eye drops he wants to test. He finds there's a lot of variability in peoples response to eye drops so he wants to use an with in subjects design. What test should he use?
What is Repeated measures ANOVA
Measures of central tendancies includes
What is mean, median & mode
In a type I error what decision has been made by the researcher about the null hypothesis?
What is the null hypothesis is false and needs to be rejected but in reality it was true.
RJ wants to know if Psychology Majors have a higher IQ than the average population. The population mean or mu is known to be 100. He asked you want statistical test he should use and you tell him__
What is a One-sample t-test.
If JJ is studying the influence of alcohol on memory compared to subjects receiving a placebo (n=20) with different subjects receiving alcohol (n=20) he should___to analyze his data.
What is independent t-test
AJ is studying the color of cars (red, or white) and asked her subjects to rate each cars speed (note they are going the same speed. What test should she use?Her hypothesis is subjects will rate red cars as going faster than white.
What is correlate t-test
If your calculate t is significant and is 5 and your df is 20 what is your eta-squared?
What is .56
A professor just gave a recall task to 6 students and the numbers are 5, 6, 7, 3, 5 2. Calculate the mean
What is 4.5
Parametric test assumes?
What is homogeneity of variance, normal sample size and dep. V on interval ratio scale..
You are a pharmacist measuring a dose response effect to a new CBD oil at 0 & 100 ml for the treatment of joint pain and using a within subjects design. What statistical test should be utilized.
What is Correlated t-test
What is the difference between parametric and nonparametric tests?
What is Nonparametric makes no assumptions about the distribution. Parametric assumes, normal distribution, ratio/interval scale for DV and homogeneity of variance.
Dr. Qin just completed an ANOVA. See Table below:
What is his F value? Eta2?
Source SS df MS F
Between 98.8 2 49.4
Within 40.8 12 3.4
Total 139.6 14
What is 14.53 and eta2 = 98.8/139.6=.71
Explain the difference between type I & II errors
What is type I rejected null hypothesis when it was true TypeII failed to reject null hypothesis when it was false
Statistical power or 1-beta means ___& what 3 factors influence this?
What is correctly rejecting the null hypothesis when it is false. The 3 factors that affect statistical power include Sample size, strength of the relationship & alpha level (.05 is a better choice than .01)