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 that they ask their viewers. Every day at 5:00 PM they put up a QR code on the screen and anyone who is watching and would like to respond may do so and answer the question.
What is voluntary response bias?
CUSS
What is shape, outliers, center, spread?
Data that provide groupings that may have no logical order, or a logical order with inconsistent differences between groups.
What is catergorical data?
Mrs. Sullivan 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. He counts out the amount of each color he 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?
You roll a dice and want to count the number of times you roll an even number and the number of times you roll and odd 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 form, outliers, direction, 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.
What is convenience sampling?
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: 75th percentile - 25th percentile).
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
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 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 nonresponse 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. Paulson has noticed that a couple 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 BC Calculus at the same time and good performance on the AP Statistics tests. He separates students into 3 groups: Students taking AB Calc and Statistics, students taking BC Calc and statistics, and students only taking Statistics. Then he looks at how many students in each group have a grade of A or B, C or F and below. Based on the results of his test, he will be able to determine whether the proportion of students who perform well in the class differs between which/how many math courses they are taking.
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?
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
What are people with alektorophobia afraid of?
What is chicken?