AP Statistics Vocab
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AP Statistics Vocab
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1. A distribution is this if the two halves on either side of the center look approximately like mirror images of each other

2. Consists of the minimum and maximum - the quartiles Q1 and Q3 - and the median

3. The experimental units assigned to a baseline treatment level - typically either the default treatment - which is well understood - or a null - placebo treatment

4. A variable that names categories (whether with words or numerals)

5. When both those who could influence and evaluate the results are blinded

6. The number of individuals in a sample

7. The ____ we care about most is straight

8. This criterion specifies the unique line that minimizes the variance of the residuals or - equivalently - the sum of the squared residuals

9. The parts of a distribution that typically trail off on either side; they can be characterized as long or short

10. An individual result of a component of a simulation

11. Tells how many standard deviations a value is from the mean; have a mean of zero and a standard deviation of one

12. The linear equation y-hat = b0 + b1x that satisfies the least squares criterion

13. Summarized with the mean or the median

14. An individual about whom or which we have data

15. Bias introduced to a sample when a large fraction of those sampled fails to respond

16. A sampling design in which the population is divided into several subpopulations - and random samples are then drawn from each stratum

17. Manipulates factor levels to create treatments - randomly assigns subjects to these treatment levels - and then compares the responses of the subject groups across treatment levels

18. We do this by taking the logarithm - the square root - the reciprocal - or some other mathematical operation on all values in the data set

19. When the levels of one factor are associated with the levels of another factor so their effects cannot be separated

20. Variables are said to be this if the conditional distribution of one variable is the same for each category of the other

21. Control - randomize - replicate - block

22. Any individual associated with an experiment who is not aware of how subjects have been allocated to treatment groups

23. The tendency of many human subjects (often 20% or more of experiment subjects) to show a response even when administered a placebo

24. A display to help assess whether a distribution of data is approximately normal; if it is nearly straight - the data satisfy the nearly normal condition

25. A sampling scheme that biases the sample in a way that gives a part of the population less representation than it has in the population

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