Statistics Semester 1 Review

Samples and Experiments

100

A survey was conducted in a local elementary school and every 5th child was selected from an alphabetical list after a random starting point was chosen.  What type of survey was conducted?

Systematic Random

200

What is the term used to describe an experiment when both the subject and experimenter do not know which group the subject is assigned too?

Double Blind

300

If you survey an entire population, you conducted a 

Census 

400

An experiment was conducted where 1000 fish were randomly placed into 10 tanks.  Each tank was then randomly assigned to recieve a vitamin supplement or not to see how the fish would thrive.  What are the experimental units? 

10 tanks

500

Name 2/4 principles of experimental design

Random

Control

Replication

Blocking

Displaying Data

100

What is this shape?

Skewed Right

200

What acronyms do we use to describe quantitative data (1-variable and 2-variable)

SOCS (for 1-variable) 

DUFS (for 2-variables)

300

What are the two formulas to find outliers?

Q₁-1.5(Q₃-Q₁)

Q₃+1.5(Q₃-Q₁)

400

If an LSRL has a y-intercept of 3 and a slope of 5, what is the residual for (2, 14)?

1

500

Find the new mean and standard deviation if I multiply by 3 and subtract 2

mu=8 and sigma=4

mu=22 and sigma=12

Basic Probability

100

What is the probabilty of A^C if P(A)=0.6

0.4

200

In a normal distribution, what is the probability of being within 1 standard deviation of the mean in both directions?

68%

300

Find the probability of at most 0

0.6

400

What is the probability you failed physics?

0.25 OR 25%

500

In a standard deck of cards, what is the probability of drawing 3 hearts without replacement? (simplification is NOT required)

13/52*12/51*11*50  =11/850 = 0.0129

Harder Probability

100

The probability that a hockey player will score a goal is 1/5.  Find the probability that the first shot she makes will be the 3rd shot taken.

4/5*4/5*1/5 = 0.128 = 16/125

200

What is the P(full time student|Two to Three times)?

25/30=5/6=0.833

300

If you flip a coin 20 times and get 15 heads, how many heads will you get in total after flipping a coin 200 times (in total)?

105

400

Name the two rules for multiplication (you need both for the points)

Ex: how would you find P(A and B)?

P(A)*P(B) OR

P(A)*P(A|B)

500

Name the 2/4 conditions for a probability distribution

Having at least 2 outcomes

Independent trials

Fixed N

Probabilities does not change (all add up to 1)