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Data Pairs Flashcards | StudBud
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Data Pairs
Data Pairs
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StudBud Administration
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Probability and Statistics, Matched Pairs, Two Samples and Correlation
Flashcards
8 cards
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Questions
8
Answers
1
Which of these studies would involve a correlation coefficient?
Scores Before vs Scores After
Pearson Critical Value (A6)
Boys' Times vs Girls' Times
Stock Prices vs Length of Skirts
2
If we test a Before-and-After-Treatment study and FTR H
0
, we conclude
the treatment does not seem to work.
the treatment seems to work.
you only live once.
3
If we test an interval on the difference between average income of seniors and juniors, ($11, $51) means
juniors make no money
the average difference is insignificant
the average difference is significant
4
When comparing scores Before-and-After, one step is to
calculate r
calculate a third column (d)
calculate sigma
5
Which of these would be considered a one-sample test, using the difference of each matched pair (x
2
-x
1
)?
Boys' Times vs Girls' Times
Scores Before vs Scores After
Pearson Critical Value (A6)
Stock Prices vs Length of Skirts
6
What tells us whether our correlation coefficient is significant?
Scores Before vs Scores After
Pearson Critical Value (A6)
Boys' Times vs Girls' Times
Stock Prices vs Length of Skirts
7
In which of these does not involve matched pairs (order of two lists does not matter)?
Stock Prices vs Length of Skirts
Scores Before vs Scores After
Pearson Critical Value (A6)
Boys' Times vs Girls' Times
8
Which of these studies would be use a two-sample test, using the difference mean
1
- mean
2
?
Stock Prices vs Length of Skirts
Pearson Critical Value (A6)
Scores Before vs Scores After
Boys' Times vs Girls' Times
