Describing Data
Data Relationships
Hypothesis Tests
Probability & Distributions
Confidence Intervals
100
This measure of center is resistant to outliers.
What is the median?
100
Q1-[(Q3-Q1) x 1.5], Q3+[(Q3-Q1) x 1.5]
What is the outlier formula?
100
This phrase is used to describe an observed effect so large that it would rarely occur by chance.
What is statistically significant?
100
This type of random variable requires a fixed number of trials.
What is a binomial random variable?
100
What is the term for the second part of a confidence interval (aka Statistic plus or minus...)
What is the margin of error?
200
To calculate, subtract the mean of the distribution from the observed x, then divide by the standard deviation.
What is the z-score (or standardized value)?
200
Shape of this distribution. 
.
What is right skewed?
200
Reject the Ho when it is true.
What is a Type I error?
200
You're playing the pick 4 lottery. Explain in detail the difference in probabilities between the winning numbers 2783 or the numbers 9999.
What is there is no difference?
200
The scores on the ACT exam are normally distributed with a mean of 21.1 and a standard deviation of 5.1. If we took a sample of 50 students who took the exam, what is the standard deviation of the sample mean?
What is 0.7212?
300
This rule helps to determine if data is normally distributed by checking the number of observations within one, two, and three standard deviations from the mean.
What is the 68-95-99.7 (Empirical Rule)?
300
This is symmetric, and has the peak centered above the mean.
What is the normal density curve?
300
The threshold p-value that determines when to reject Ho.
What an alpha value (level)?
300
Events that have no outcomes in common and can never occur simultaneously, for which the addition rule is used.
What are disjoint events (or mutually exclusive events)?
300
What is the critical value in calculating a 92% confidence interval?
What is 1.75?
400
The standard deviation of 16 measurements of people's weights (in pounds) is computed to be 5.4. The variance of these measurements is...
What is 29.16?
400
The significance of 34 in this distribution.
What is the least squares regression line
400
SRS of observations
sample is less than 10% of the population
np>10; n(1-p)>10
What are the assumptions for inference for proportions?
400
An airline reports that 85% of its flights will arrive on time. Find the probability that the first late flight is the 4th flight.
What is 0.0921?
400
Determine the margin of error for the following:
Calculate 90% confidence interval for p when 15% of students in AP Statistics classes (47 total) study for their Big Test.
What is 0.08542?
500
A consumer group surveyed the prices for a certain item in 5 different stores and reported the average price as $15. We visited 4 of the 5 stores and found the prices to be $10, $15, $15, and $25. Assuming the consumer group is correct, what is the price of the item at the store we didn't visit?
What is $10?
500
All members of a defined group that we are studying or collecting information on for data driven decisions.
What is a population?
500
When the p-value = 0.03 < alpha value = 0.05.
What is reject the Ho?
500
Steph Curry is a 92% free throw shooter. Assuming that his shooting is independent, what is the probability that in the next 10 free throw attempts, he makes less than 9?
What is 0.188?
500
A poll asked a random sample of people "In general, are satisfied or dissatisfied with the way things are going in the US at this time. 256 said they were satisfied, and the remaining 769 said they were not. Construct and interpret a 90% confidence interval for the proportion of adults who are satisfied with how things are going.
What is "We are 90% confidenct that the true proportion of people who are satified with the way things are going in the US is between 0.228 and 0.272"?