stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
B218 - Recap of Week 3 and Intro to Week 4 Flashcards | StudBud
Explore
/
B218 - Recap of Week 3 and Intro to Week 4
B218 - Recap of Week 3 and Intro to Week 4
10 terms
·
StudBud Administration
·
113 plays
Imported from external platform
Flashcards
10 cards
F
Practice quiz
P
Host live
L
Questions
10
Answers
1
Probability sampling method is more accurate.
False
True
2
Estimating Population Proportions is needed when we want to draw conclusions for eg .... (can choose more than one ans)
The proportion of people who own an iPhone
fastest time to be in Top 10% of race
Minimum score if you want to get an A for B218
proportion of people who own a car
3
For Simple Random, Systematic and Stratified sampling, all elements of the population have an equal chance of selection
False
True
4
CLT can only be true if the population distribution is .....
normal
binomial
can be any type of distribution
less than 30 in the population
5
Which formula is used to transform normal variable to Z-score in a sampling distribution ?
Left
Right
6
Confidence Interval, is .....
always 90% or 95%
range of values for which we are confident the true pop means lie within
whatever area under the curve
7
What is one of the important step in the 5-step sampling plan ?
sampling must be systematic, non-random
Define the Target Population
convenience sampling
8
Stratified sampling is a non-probability sampling method ?
True
False
9
In cluster sampling, what is the probability of a person being selected ?
50-50
bigger the cluster, lower chance of being selected
chance of being selected as sample is same as proportion of population
random chance
10
A fundamental theory in statistics that states that if sample size is large enough, the distribution will become normal
Central Limit Theorem (CLT)
Law of gravity
Inferential statisitcs
