Variables and Vocab
LSRL
Practice?
Movies
Inference Methods
100
r is the measure of this, which indicates a linear association between 2 quantitative variables.
What is correlation?
100
An r value of -.98 tells us these 2 things about it's correlation.
What are negative and strong?
100
What is the probability that an individual did NOT choose superstrength?
372/415 = 0.8964
100
This movie is about a koala bear (played by Matthew McConaughey), who starts a music competition for $100,000 even though he doesn't have the money.
What is Sing?
100
What null and alternative hypothesis should I use if I am testing if an increase in wind will lead to a decrease in temperature?
Ho: B=0
Ha: B<0
200
Give the coordinates of a high leverage point.
(5.1 , 105)
200
Write out the Least-Squares Regression Line for this set from this computer output.
y-hat = 5.054+.2715x
200
log (yhat) = 0.8 + 1.2 (x)
What is the predicted value of Y when x = 4?
398107.17
200
This 2015 disney movie looks into the emotions in a 12 year old girl's head as she deals with a life changing move. Some of the emotions include joy, sadness and anger.
What is Inside Out?
200
What condition for inference has been violated?
Unequal SD/Variance of residuals
300
x= study hours, y = exam score. Interpret r-squared.
56.7 % of the variability in exam scores is accounted for by our LSRL where x = study hours.
300
A student who studied for 14 hours got a test score of 95. Calculate the residual and determine if the predicted score is an overestimate or underestimate.
residual = -5.086
Overestimate
300
What would happen to the slope and y int if point A was removed?
Slope would increase and y-int would decrease
300
This 2018 movie kills off a majority of its heroes. Some of the X-Force members killed off include zeitgeist, shatterstar, vanisher and Peter.
What is Deadpool 2?
300
12 students were surveyed about their # of hours studied (x), and final exam score (y). Calculate a 95% confidence interval based on this computer output.
2.697 +/- (2.228)(0.745)
(1.037,4.357)
400
12 students were surveyed about their # of hours studied (x), and final exam score (y). Interpret the slope of the LSRL.
For each additional hour spent studying, the expected score on the final increases by about 2.697.
400
We found the LSRL for this scatterplot is y=-216+5.4x.
We found a student with a height of 70 and a weight of 195. Find the residual for this value.
What is 33?
400
r = .9 xbar = 10 ybar = 140 sx = 1.5 sy = 9
Calculate the equation of the LSRL.
yhat = 86 + 5.4x
400
This 2022 Nic Cage movie gave the actor his biggest challenge to date: acting as himself.
What is the Unbearable Weight of Massive Talent?
400
Calculate the test statistic if testing to see if there is a positive association between mass and resting metabolic rate.
22.563/6.36 = 3.548