Types of Data
Temperature measured in Celsius represents this type of data.
What is interval data?
This measure describes the most frequently occurring value in a dataset
What is mode?
The hypothesis stating there is no difference between study groups
What is a null hypothesis?
A result is statistically significant when the p-value is less than this threshold
What is alpha?
This test is used when the data is parametric, dependent, and is used for groups of two.
What is paired t-test?
This type of data includes age, height, weight.
What is ratio data?
The middle value of an ordered dataset is known as
What is median?
Rejecting a TRUE null hypothesis results in this type of error.
What is a Type 1 error?
This value is compared to alpha to guide decisions in hypothesis testing.
What is p-value?
This test is used when data are nominal and independent.
What is Chi-squared?
This type of data includes categories with no inherent order, such as blood type.
What is nominal data?
Calculate the odds ratio. Round to two decimal:
Event No Event
Treatment 10 30
Control 20 20
What is 0.33?
This error occurs when a study fails to reach statistical significance despite a real treatment effect due to small sample size.
What is Type 2 error?
A 95% confidence interval for relative risk that ranges from 0.72 to 0.94 supports this conclusion.
What is statistically significant?
This test is used when the distribution is normal, has 1 variable, and used in 3 or more dependent groups.
What is ANOVA.
You will see this type of data when asked to rate your pain on a scale of 1-10.
What is ordinal data?
In a trial, myocardial infarction occurred in 180/1000 of the control group and 90/1000 of the treatment group. Calculate the number needed to treat.
what is 12?
This is the probability of making a type 1 error with an alpha set at 0.05.
What is 0.05 OR 5%?
A 95% confidence interval for a relative risk that ranges from 0.6 to 1.4 demonstrates that the estimate includes this value associated with no effect.
What is 1?
This test would be appropriate in a study comparing pain scores between two independent patient groups.
What is Mann-Whitney U test?
A study is comparing two groups of patients. 86% of group A is taking aspirin and 66% of group B is taking placebo. Aspirin is what type of data.
What is nominal data?
Stroke occurs in 12% of placebo patients and 8% of treated patients. Calculate the relative risk reduction to the nearest decimal.
What is 33.3%?
This is the probability of committing a Type II error for a study with an alpha of 0.05 and power of 90%.
What is 10% OR 0.10?
A 95% confidence interval for an odds ratio that includes the value 1 leads to this hypothesis-testing conclusion.
What is fail to reject the null hypothesis/not statistically significant?
A study is comparing two independent patient groups with the following parametric adverse event distribution. This statistical test is most appropriate for comparing the groups.
Rash No Rash
Group A 40 60
Group B 55 45
What is Chi-square test?