One sample t-test
Independent Samples t-test
Paired Samples t-test
ANOVA
100
1) A t-test is used in place of a z-test when this value is unknown for the population.
What is standard deviation?
100
An independent samples t-test is run on one sample with n = 10 participants and a second sample of n = 15 participants. This is the degrees of freedom for the t-statistic.
What is 23?
100
This is the correct null hypothesis in statistical notation for a paired samples t-test.
What is μD = 0?
100
This is the critical F value for a One-Way ANOVA with DF between = 3 and DF total = 19.
What is 3.24?
200
A researcher conducts a one-sample t-test and finds the following results: t(15) = 2.13, p<.05. This is how many individuals were in the sample.
What is 16?
200
The results of an independent samples t-test are reported as follows: t(72) = 3.70, p = .04. Based on this report, how many individuals were in the sample AND should you accept or reject the null?
What is N=74 AND reject the null?
200
These are the critical t-values for a two-tailed test with alpha = .05 and a sample of n = 15 participants.
What is t = 2.145?
200
In a One-Way ANOVA, what does an F-ratio = 1.00 tell us about the treatment effect that has been analyzed?
What is there is no treatment effect?
300
This is what is measured by the estimated standard error.
What is the average distance between a sample mean and the population mean?
300
_________________ sample size and _________________ variance will increase the likelihood of rejecting the null hypothesis in an independent samples t-test.
What is Increasing and Decreasing?
300
A paired samples and independent samples t-test both produced a t-statistic with df = 16. How many individuals participated in each study?
What is 17 for repeated and 18 for independent?
300
3) A psychologist uses a One-Way ANOVA to examine the effects of sugar consumption on the activity level of preschool children. One group gets no sugar, one group gets a small dose, and a third group gets a large dose. After recording the activity level for each child, the psychologist determines that the value of η2 for this analysis is .645. What does this tell us about how sugar consumption affects activity levels?
What is 64.5% of the variance in activity level can be explained by sugar consumption?
400
As sample size increases, the likelihood of rejecting the null hypothesis _______________ and measures of effect size such as Cohen’s d __________________.
What is increases and are not affected?
400
One sample of n = 5 scores has SS = 36. Another sample of n = 7 scores has SS = 64. This is the value of the pooled variance for these two samples.
What is 10?
400
The data from a paired samples t-test shows that all participants scored 10 points higher in treatment 1 than in treatment 2. These data will produce a __________________ sample variance and a _________________ t-statistic.
What is small and large?
400
An analysis of variances produce SSbetween = 30, SSwithin = 60, and an F-ratio with df = (2, 15). For this analysis, what is the F-ratio?
What is 15/4 = 3.75?
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