PPRAG 1672 9.22.22

If the probability is less than the alpha, the null hypothesis is rejected, and the result is statistically significant

Given the following values, calculate the median: 4,4,4,6,6,7,9,9,10

Refers to non-ordered categories:

If you increase the number of cases, you will get more precision and a narrower confidence interval

Sampling distribution is the distribution of a statistic.

For any single statistical test, the probability of type 2 error=alpha

Number of days until cure is an example of which of the following?

Consists of categories that are ordered but not equidistant

Probability of type 2 error = 100% - Power of the test

The range within which the population value is likely to fall, estimated at a specific probability

The point that divides the distribution into two parts, such that an equal number of values fall above& below that point

Rejecting the null hypothesis when the null hypothesis is actually true (false positive)

A positive pregnancy test result for a patient who is a 90-year-old man is an example of

Height, age, and blood pressure are all examples of which of the following type of continuous scale?

Yes verus no is an example of which of the following?

If you increase variability, the confidence interval will widen

Distribution refers to the way in which observations are arrayed when plotted in two-dimensional space.

Calculates probability of obtaining the observed results if the null hypothesis is true

Calculate the median from the following set of numbers: 5,3,4,5,14,2

You have separate lists of U of A and ASU students and use a random number generator to select 200 students from each:

Degress in Fahrenheit is an example of which type of continuous scale?

Standard deviation is not sensitive to extreme values.

Select the true statement(s) regarding between group differences:

Which of the following accurately describes the picture below?

Which of the following are equal in normal distribution?

In an adequate sample size(power),Fisher's Exact Test will be statistically significant if actual deviates from expected

Cluster samples are used when no list is available. You select groups and then people within those groups.

Failing to reject the null hypothesis when the null hypothesis is actually false (false-negative)

Which of the following is the distribtuion that would be obtained from gathering multiple samples?

Sample=280 patients, mean days to resolution=50, standard deviation=8How many cases have values exceeding 66?

Consists of equidistant categories

Range is from the highest to lowest value.

Which of the following is estimated from sample statistics?

The probability of rejecting a false null hypothesis (finding statistical significance when the result is significant)

Using a list of Midwestern students sorted in random order, selecting every 10th student is an example of

"Drug A and placebo are actually the same" is an example of which of the following?

If observed P is < alpha, the result is statistically significant

The interquartile range is the range from ____ to ____ %ile.

Gaussian distribution refers to a skewed distribution.

A negative test when the patient actually has the disease is an example of

Which of the following is the best measure of variation with distribtuion is skewed?

Standard deviation is the standardized measure of variability, calculated based on cubed distances.

95% of cases are within how many standard deviations from the mean?

The most commonly occurring value

Given the following values, calculate the mean: 4,4,4,6,6,7,9,9,10

Which of the following accurately describes the picture below?

Sample=280 patients, mean days to resolution=50, standard deviation=8What range do 95% of patients fall?

Nominal variable with only two possible values

Pearson correlation is not affected by outliers and should be used for normal distributions

If analysis are underpowered, what type of error will occur?

A survey with the categories: dislike, neutral, like, is which of the following?

Sample=280 patients, mean days to resolution=50, standard deviation=8What range do 68% of patients fall?

Given the following values, calculate the mode: 4,4,4,6,6,7,9,9,10

Racial groups are an example of which of the following?

The average, sum of values divided by N cases

Pearson Chi-Square Test

Assume a normal distribution, sample mean=100 and SD=10. 68% of cases would fall between which of the following?

Select all of the true statements

The hypothesis that the relationship between or among the study variables is not as hypothesized by the investigator.

Which of the following are true regarding inferential statistics?

Which of the following is used for nominal or ordinal variables?