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1003PSY PASS Week 8 Review Flashcards | StudBud

Explore/1003PSY PASS Week 8 Review

A test cannot be valid if it is not reliable.

Which term describes the consistency of data?

1003PSY PASS Week 8 Review

8 terms·StudBud Administration·64 plays

For Week 9 Session! Covers probability and sampling. :)

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Questions 8

Answers

1
Which term describes the consistency of data?
Reliability
Significance
Validity
Probability
2
A test cannot be valid if it is not reliable.
False
True
3
What is sampling error?
Human error when calculating statistics
Natural variation in results
How far an observation is from the mean
Bias caused by faulty sampling
4
What is the probability of flipping a coin and getting two heads in a row?
P = 0.25
P = 0.5
P = 0.1
P = 1
5
What is the addition probability rule?
P of either two separate events occuring is the sum of their individual Ps
P of any two independent events occuring is the product of their Ps
P of event not occuring is 1 - P
All probabilities add to 1
6
Samples of convenience are easiest to collect and most representative.
True
False
7
What is the formula for Confidence Intervals?
CI = s ± z(x√n)
CI = n ± z(x√s)
CI = s ± ˉx(s√n)
CI = ˉx ± z(s√n)
8
What is a disadvantage of simple random sampling?
Open to selection bias
Subject to sampling error
Difficult to achieve
Won't have good validity