Collecting dat-A
Single Variables
Sample Distributions
Intervals
Tests
100
Alvin from "Alvin and the Chipmunks," is quite recognizable, but what are the names of his 2 brothers?
Who are Theodore and Simon?
100
What are the 2 formulas we can use to calculate outliers? (Write out both formulas)
Mean +/- (2*SD)
Or
Q1 - (1.5*IQR) to Q3 + (1.5*IQR)
100
For a certain population of elephants, the mean weight is 1,300 lbs with a standard deviation of 120 lbs. A scientist wants to find the probability that an elephant is too heavy for a footbridge. The weight limit for the foot bridge is 1500 lbs. If we are using samples of size 62, what is the mean of the sample distribution of sample means?
1,300 lbs
100
What would be the critical value of an 88% confidence interval with a sample size of 70?
t=1.57
100
For which inference method would I need to find pooled sample proportion?
2 sample z test for difference of proportions
200
What are the 4 components of a well designed experiment?
-randomization
-at least 2 groups
-replication
-control of confounding variables
200
We had a sample of 100 hits from the LHS baseball team and found a sample mean distance of 140 feet with a standard deviation of 26 feet.
Interpret the standard deviation in the context of the problem.
Distances of hits on the LHS baseball team typically vary by about 26 feet from the mean distance of 140 feet.
200
What is the shape of a random distribution of sample means from samples of size 15, from a left skewed parent population.
Left skewed
200
We want to find the proportion of American adults who have seen Peaky Blinders. We were able to get a random sample of 120 American adults to survey and found that .36 of them have seen Peaky Blinders. What would the margin of error be for a 92% confidence interval?
MOE=0.077
200
What is the max score on the SAT and ACT test combined?
1636
300
Mr. Inahara randomly selected 4 students from each classroom in the D-Wing, to survey what genre of music students would like to listen to in the common area. What type of sampling method did Mr. Inahara use?
Stratified random sample
300
These 2 celebrities are now SINGLE after a recent break up. Who are the celebrities?
Who are Cardi B and Offset?
300
The proportion of men in the US that are color blind is 8%. If we took samples of 40 men, what is the standard deviation of the sample distribution of sample proportions?
SD = .043
300
In a 95% interval, what is the smallest possible sample size to estimate the population proportion within .08?
n = 151
300
In a 2 sided hypothesis test for population mean, we found that t=1.45 from our sample of 45 individuals. Calculate the p value for this test.
p = .154
400
Nurse-Practitioners are nurses with advanced qualifications who often act much like primary-care physicians. Are they as effective as doctors at treating patients with chronic conditions? An experiment was conducted with 1316 patients who had been diagnosed with asthma, diabetes, or high blood pressure. Within each condition, patients were randomly assigned to either a doctor or a nurse-practitioner.
What are the blocks used in this experiment?
Asthma, diabetes, and high blood pressure
400
In 2017, the mean SAT score in the US was a 1060 with a standard deviation of 195. If Mr Gregg's score had a Z-score of 1.026, what was his SAT score?
SAT score of 1260.07
400
Jack Harlow's hit song "First Class," samples this song off of Fergie's 2006 album, "The Dutchess," in which she spells out the title of the song.
What is Glamorous?
400
What is the interval in years in which world war II took place?
1939 to 1945
400
In a test to find the difference between the proportion of lake oswego and lakeridge students that drive to school, we sampled 100 random students from each school. 58 students at lake oswego drove to school, and 62 students from lakeridge drove to school. Calculate the test statistic for the appropriate.
z = .577