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Experiments
Surveys
Probability
Miscellaneous
100

What do we call variables that are represented by words?

 

Categorical

100

What do we call the "fake" pill?

Placebo
100
What type of sample has response cards sitting on a table that says "rate my server?"

Voluntary

100

What is the probablity of Ac if P(A) = 0.6

0.4

100

What is the probability of landing with in 1 standard deivation of the mean in either direction?

68%

200

What shape is a distribution if the mean is 8 and the median is 10?

Skewed Left

200

What is the type of experiment when subjects are split into non-overlapping groups on a characteristic that might impact the outcome of the experiment?

Blocking

200

What kind of survery is this:

Jeremy goes door to door in his neighboorhood to ask what car people drive

Convenience

200

Name one formula to prove independence?  (There are two possibilities)

P(A)*P(B) = P(A and B)

P(A|B) = P(A)

200

What conditions need to be met for a geometric setting?

Binary

Independent (or passes 10% rule)

Trials until Success

Same Probability of success

300

If mu =8 and sigma = 4, what will be the new mean and standard deviation if I multiply by 3 and subtract 2?  (you must get both correct to earn the points)

mu = 22

sigma  = 12

300
What do we call sujbects that are NOT people?

experimental units

300

What type of sample gives every person in the population an equally likely chance to be chosen?

Simple Random Sample (SRS)

300

The probability of a person owning a dog if 55%.  Find the probability that the first person you find who owns a dog is the 3rd person you sample.

0.111375

300

What kind of experiment compares someone to themselves?

Matched Pairs
400

Rank the following distributions from lowest to highest standard deviation without a calculator.

A. 1, 2, 3, 4, 5, 6, 7, 8

B. 100, 100, 100, 100, 100, 100

C. -10, -10, -10, 0, 0, 0, 10, 10, 10

D. -10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10

B, A, D, C

400
What is the term used to explain other explaination for the results from an experiements that was not tested for?  

Confounding/Confouding Variable (Lurking Variable)

400
What type of survey has a random start and then follows a pattern?

Systematic Random Sample

400

If sigma x = 4 and sigma of y = 3, what is sigma of (x+y)?

5

400

What are the condition(s) necessary to assume independence?

sample <10% population


500

In period 1 the class average was 80 with a standard deviation of 10. In period 2, the class average was a 75 with a standard deviation of 8.  Carla scored an 82 in period 1 and David scored a 77 in period 2.  Who did better in comparsion to their class? 

David (z= 0.25).  Carla's z-score was z=0.2

500

What are the 4 components of experimental design?  (you must have all 4 correct to earn the points)

1. Randomization

2. Replication

3. Control

4. Comparison 

500

Given the situation that a teacher asks her students how much work they will independently complete over a holiday break, what type of estimation will likely occur?

Overestimate - more positive responses than actual...

BUT NOT FOR MS. M's STATS CLASS, THEY WOULD NEVER LIE TO HER!

500

For the binomial distribution there are 4 requirements.  Name all 4  (you must have all correct to earn the points)

1. Binary (Only 2 outcomes)

2. Independent Events (or passes 10% rule)

3. set Number of trials (n)

4. Same Probability (does not change)

500

What are the cutoff for outliers if the min = 3, Q1 = 6, Med = 10, Q3 = 15 and Max = 15?

-7.5 and 28.5