Kimbell
I have two sweaters with animals on them. These are the two animals.
What are a koala and a bee
My standard error for a distribution of means is 8. If I increase my sample size by a factor of 25, this would be my new standard error.
What is 40
This is the name of a chi square test done on a dataset with 2 variables from 1 sample
What is a chi square test for independence?
This is the activity we did on family day this year
What is a (poorly designed) survey
I claim that the distribution of favorite math classes at Webb is (stats, 80%; calculus, 15%; HPC 5%). I ran a survey on 100 students and got the results (stats, 90%; calculus, 8%; HPC 2%). Declare the type of chi square test this is and run it at the 1% significance level (find the chi square and p values)
What is goodness of fit, chi square = 6.317, p = .042, not significant (fail to reject null)
I taught these four classes last school year.
What are IPC, Physics C, HPC, and Calc AB
The formula for degrees of freedom is n-1 for means. Explain why it is n-1 and not n.
What is, if you know the information for n-1 data points and you are calculating the mean, then the nth data point can only be one value
What is homogeneity has two samples and one variable, independence has multiple variables for one sample
Daily double! You can wager up to all of your points (or 1000, whichever is greater)
If you can juggle 3 balls for 5 seconds, you get the points. You have 3 attempts.
This is my birthday (Month and Day)
Closest group wins, no penalty for guessing wrong
What is July 27
This is the reason we would use a t distribution instead of a z distribution.
What is we do not know the population standard deviation
This is the shape of every chi square distribution
What is right skewed
This is the name of a situation in game theory where no player can improve their result by switching their individual behavior
What is a Nash Equilibrium
I gave four chapel intros this year. Name the four students who were intro'd by me. (3 out of 4 will get you the points if no one steals)
Who are Michael, Geoffrey, Eric, and Larry
I run a sig. test and a confidence interval on a difference of means. Mean 1 is 35 and mean 2 is 32. The t distribution for the significance test would be centered on this value, whereas the t distribution for the confidence interval would be centered on this value.
What is 0 and 3
A chi square test for independence is done comparing happiness ratings (on a scale of 1-5) and shoe type (flip flops, crocs, boots). This would be the degrees of freedom.
What is 8
This was our first lesson that introduced the idea of statistical significance
What is "Can Joy Smell Parkinson's?"
(would also accept the gerrymandering lesson, since we informally used it there)
Daily double (you can wager up to your whole score or 1000 points)
During Xtreme Icebreakers on the first day of school, someone had to guess what was making a noise. This was the answer (be precise).
This is the difference between a difference of means and a mean difference
What is difference of means is testing two different distributions and seeing how different their means are, whereas a mean difference creates a distribution of the differences between pairs of data (matched pairs)
The quantity in the numerator of the chi square formula is the same as this quantity from earlier in the year
What is the residual
As an earlier team building, we played Spring Trivia. Name three of the questions from Spring Trivia and their answers (if you get 2/4 you get the points unless another team steals).
What are vernal equinox (March 21), Hooke's law (F=-kx), continents without native rabbits (Antarctica and Australia), and states without daylight saving time (Arizona and Hawaii)