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Chapter 15 Statistics Flashcards | StudBud

Explore/Chapter 15 Statistics

Chapter 15 Statistics

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Questions 8

Answers

1
What does an alpha level of .05 mean?
Less than 5% the results are due to the treatment
There is 5% chance of a relationship
5% is the strength of the relationship
Less than 5% probability that results occured by chance
2
What is the null hypothesis?
Specifies the difference between variables
Describes how correlation causes changes
Describes the independent variable
States there are no differences between variables
3
What type of data is found in interval and ratio scales?
Named categories
Numerical data
All of the above
Ordered items
4
What type of data is found in nominal scales?
Ordered items
Named categories
All of the above
Numerical data
5
What does a Cohen's d of .5 mean?
Less than 5% probability that results occured by chance
There is 5% chance of a relationship
5% of the results have errors
Results have a medium effect size
6
What is the difference between inferential and descriptive statistics?
Descriptive statistics uses t-tests
Inferential statistics helps draw conclusions
Descriptive statistics helps draw conclusions
Inferential statistics uses the mode to describe data
7
What is the difference between an interval and ratio scale of measurement?
Ratio scale has a true 0
Interval scale has a true 0
All of the above
Ratio scale uses an arbitrary 0
8
What is effect size?
Determining if a relationship between variables exist
Determining how consistent the results are
How big the difference is between two variables
All of the above