Name the Test
Ms. Brown and Ms. Eastwood are observing the National mean scores for the AP Statistics exam is a 2.89. They want to know if the VR mean score on the AP Statistics exam is different than the national mean.
What is a 1-Sample T-Test for means?
Two events that have no outcomes in common.
What are disjoint/mutually exclusive events?
A local TV news station has a daily poll they ask their viewers. Every day at 5:00 PM they put up a QR code on the screen. Anyone who is watching and would like to respond, may scan the QR code and answer the question.
What is voluntary response bias?
CUSS
What is center, unusual features, shape, and spread?
Data that provide groupings that may have no logical order, or a logical order with inconsistent differences between groups.
What is categorical or qualitative data?
Ms. Clawson had bought a jumbo bag of skittles and is curious to see if his ratio of green, red, yellow, brown and blue skittles matches the ratio describes on the skittles website. She counts out the amount of each color she has and decides to run a ________ Test to see if it matches the historical ratio.
What is a Chi Squared Goodness of Fit Test?
These are the three principles of experimental design.
What are control, randomization, replication?
For a test of significance, you roll a dice and want to count the number of times you roll an even number. After 30 trials, you roll an even number 8 times and an odd number 22 times. The ___ Condition is NOT satisfied.
What is Large Counts (Normailty)?
DUFS
What is direction, unusual features, form, and strength?
Stem plots, histograms, box plots, bar graphs, dot plots and scatter plots can be used to display this kind of data.
What is quantitative data?
A hospital reported 5 c-section births out of 89 patients under the age of 38. The same hospital reported 9 c-section births out of 56 patients over the age of 38.
What is a 2 proportion Z Test?
P(A)=P(A|B)
What are independent events?
A television reporter wants to determine if Maryland residents would be interested in renovating Camden Yards, Baltimore's baseball field. The reporter asks baseball game attendees at Camden Yards if they support the idea. This represents what type of sampling bias?
What is convenience sampling bias?
You have a normal distribution, about this many standard deviations is what 95% of the values lie within.
What are two standard deviations?
Range of the middle 50% of the values (Q3 - Q1).
What is the Inter-Quartile Range?
Coach Leake wants to see if his training is leading to improvement in his sprinter. He has them all run a 100m at the beginning of the year and records their times. Then, after a full season of training, he has them run the 100m again in the same conditions (same track, same weather, etc.). He then records their new times. He runs a test to see if there is a statistically significant difference between their times at the beginning of the season, pre-training, and at the end of the season.
What is a Matched Pair T-Test?
A model that concerns the first time you do something/number of trials until the first success occurs.
What is the geometric model?
A survey was sent out on a new phone app to try to get information about all the people in the United States. However, mainly younger Americans (aged 14-30) have this app on their phone. This is an example of ___.
What is undercoverage bias?
This is the expected value equation for discrete random variables.
What is E(X) = ∑(x)*P(x)?
How can you find whether or not a data point is an outlier mathematically?
What is
> Q3 + 1.5(IQR)
< Q1 - 1.5(IQR)?
Mr. Sullivan has noticed that some of his students are taking AP Calculus BC at the same time as they are taking AP Statistics. He wonders if there is a correlation between taking an AP Calc course with AP Stat and good performance on the AP Stat test. He separates students into 3 groups: Students taking AP Calc BC and AP Stat, students taking AP Calc AB and AP Stat, and students taking only AP Stat. He then looks at how many students in each group have a grade of A-B, or C-F. Based on the results of his test, he will be able to determine whether there is a relationship between the type of math course(s) students are taking and how well they perform in AP Statistics.
What is Chi Squared Test for Independence?
In a study of 200 college students, 80 are taking statistics, 120 are taking psychology, and 40 are taking both. If a student is randomly selected, what is the probability that the student is taking statistics, given that they are taking psychology?
What is 0.3333?
You observe the residual plot of your linear regression and check to see if there is a fan shape or pattern in your graph.
What is Equal Variance Assumption?
SD(X) = 3
SD(Y) = 5
SD(X-Y)= ?
(Hint use your calculator)
What is square root [(3)^2+(5)^2] = 5.831
People with alektorophobia are afraid of this.
What is chicken?