Stats Exam Review

You have a paired group and assuming non-gaussian or not normally distributed data, which test is the most appropriate?

ANOVA

Two tailed T-test

Mann-Whitney Test

Wilcoxon matched-pairs signed rank test

Categorized in ordered groups with equivalent intervals between the variables but zero point is meaningful

Binomial

Ratio

Interval

Ordinal

Which of the follow express rank and order matters?

Nominal

Binomial

Ordinal

Continuous

If you increase the number of your sample size from 100 to 400, what would happen to your SEM?

Decrease by x2

Stay the same

Increase x4

Decrease by x4

Suppose a clinically accepted value for mean fasting glucose in females aged 20-29 is 100 mg/dL and the standard deviation is 10 mg/dL. The fasting glucose for a 25-year-old female was 120 mg/dL. How many standard deviations above the mean is the subject's fasting glucose?

If you have a large SD, what does that mean about your data?

Your data is widely scattered and sample mean is likely further from the population mean

Your data is tight w/ little variability and it is likely to be closer to the population mean

Your data is dispersed and is likely to represent the population

Your data is centered around the mean and likely does not represent the population mean

What is the computed from the data and is a measure of the strength of the evidence?

The null hypothesis

T-test

P value

What results from a very low alpha (significance level lower than 0.05)?

You will make less type I errors

You will make more type I errors

You will make less type II errors

More false positive errors

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