Descriptive and Inference Statistics

Flashcard
•
Mathematics
•
10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
In a(n) ____________________ study, researchers observe and measure variables without manipulating any factors.
Back
observational
2.
FLASHCARD QUESTION
Front
You have a mean of 56 and a standard deviation of 4.3. What is +2 standard deviations from the mean?
Back
64.6
3.
FLASHCARD QUESTION
Front
The mean weight of Sumo wrestlers is 330 pounds with a standard deviation of 40 pounds. The mean weight of soccer players is 142 pounds with a standard deviation of 5.2 pounds. A particular Sumo wrestler weighs 360 pounds and a particular Soccer player weighs 153.6 pounds. Who weighs more, relatively speaking? (Who has a higher z score?)
Back
Soccer player
4.
FLASHCARD QUESTION
Front
Population or Sample? The average weight of every person entering the mall within 3 hour period was 146 lb.
Back
Population
5.
FLASHCARD QUESTION
Front
A(n) ____________________ involves manipulating one or more variables to determine their effect on a dependent variable.
Back
experiment
6.
FLASHCARD QUESTION
Front
What is the definition of descriptive statistics?
Back
Descriptive statistics summarize and describe the characteristics of a data set.
7.
FLASHCARD QUESTION
Front
What is the purpose of inferential statistics?
Back
Inferential statistics allow us to make predictions or inferences about a population based on a sample.
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