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AP Stats Chapter 7 Review Nick Friedl, Patrick Donovan, Jay Dirienzo Q1: A variable whose value is a numerical outcome of a random phenomenon. Random Variable Expected Value Normal Distribution Expected Value is incorrect The correct answer was Random Variable Go to Q2 Random Variable is correct! Go to Q2 Normal Distribution is incorrect The correct answer is Random Variable Go to Q2 Q2: This graph is an example of: Uniform Distribution Density Curve Probability Histogram Uniform Distribution is incorrect The correct answer is Probability Histogram Go to Q3 Probability Histogram is correct! Go to Q3 Density Curve is incorrect The correct answer is Probability Histogram Go to Q3 Q3: _____ tells us what the possible values of X are and how probabilities are assigned to those values. Probability Distribution Variance Discrete Random Variable Probability Distribution is correct! Go to Q4 That is incorrect The correct answer is Probability Distribution Go to Q4 Q4: The average of the squares of the standard deviations of the observations from their mean is Quantitative Critical Variance Critical is incorrect The correct answer is Variance Go to Q5 Quantitative is incorrect The correct answer Go to Q5 Variance is correct! Go to Q5 Q5: A theorem that describes the result of performing the same experiment a large number of times. According to the law, the average of the results obtained from a large number of trials should be close to the expected value, and will tend to become closer as more trials are performed. Pythagorean Theorem Bill of Rights Law of Large Numbers Simpson’s Paradox That is incorrect The correct answer is Law of Large Numbers Go to Q6 Simpson’s Paradox is incorrect The correct answer is Law of Large Numbers Go to Q6 Law of Large Numbers is correct! Go to Q6 Q6: Expected value is the __________ of all possible outcomes of a random variable. Sum Cumulative Frequency Relative Frequency Sum is correct! Go to Q7 Relative Frequency is incorrect The correct answer is Sum Go to Q7 Cumulative Frequency is incorrect The correct is Sum Go to Q7 Q7: A type of continuous distribution: Continuous Random Variable Normal Distribution Normal Shmistribution Normal Distribution is correct! Go to Q8 That is incorrect The correct answer is Normal Distribution Go to Q8 Q8: The distribution of a random variable in which each value has the same probability of occurance: Uniform Distribution Probability Histogram Density Curve That is incorrect The correct answer is Uniform Distribution Go to Q9 Uniform Distribution is correct! Go to Q9 Q9: Takes all values in some intervals of numbers: Integer Variables Irregular Numbers Continuous Random Variable That is incorrect The correct answer is Continuous Random Variable Go to Q10 Continuous Random Variable is correct! Go to Q10 Q10: An average of the products of the standardized X and Y observations Correlation Variance Distribution Correlation is correct! End! Distribution is incorrect The correct answer is Correlation End! Variance is incorrect The correct answer is Correlation End! Thanks for reviewing the Chapter 1 vocabulary!