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Vocab 1
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Throwback
BONUS
100
To artificially re-create the random process a large number of times.
What is simulation?
100
What is the probability of landing tails? (flipping a coin once)
.50
100
what is the probability of having 1 boy and 1 girl?
What is .5
100
what is the formula for finding z-score?
What is (observational unit-mean)/(standard deviation)
100
What is the probability of flipping tails on a coin and then flipping it again, and then a heads on the third time?
.125
200
Refers to the long-run average result of the process.
What is expected value of a numerical process?
200
What is the probability of choosing a red card randomly in a standard deck of playing cards?
.50
200
what is another way to say long-run proportion?
What is relative frequency
200
what is a key difference between observational studies and experiments?
What is the ability to draw general conclusions from experiments, but not from observational studies
200
3 quarters 1999 1978 2010 What is the probability that a randomly chosen quarter from this set is greater than the mean of the 3 quarters?
Mean=1995.66 1999 and 2010 2/3 .6666
300
The observed proportion of times that the event occurs.
What is an empirical estimate?
300
What is the probability of rolling a 3 on a six sided dice twice in a row?
.0277777778
300
what can be expected from the expected value in the short-run?
What is nothing!! it be unlikely or not even possible
300
in which phenomenon is it shown that aggregate proportions can reverse the direction of the relationship seen in individual pieces
What is simpsons paradox
300
if you test positive for AIDs, do you probably have it?
What is nope!! only 6.22% of those who test positive for AIDs actually have it
400
The listing of possible values of a numerical random variable, along with the probabilities for those values.
What is probability distribution?
400
Bag of 10 M&M's, 2 pieces each red, brown, yellow, green, blue. What is the probability of pulling out two red M&M's in a row?
.0222222222
400
how do you calculate expected value?
What is outcome1 x probability of outcome1 + outcome2 x probability of outcome2 +...
400
what does the acronym MAD stand for?
What is mean absolute deviation
400
what makes an outcome unlikely?
What is probability of .10 or less
500
A probability of .05 or less
What is a rare outcome?
500
Julie 22 John 27 Joe 13 Jim 40 Susan 15 Choose one person randomly, what is the probability that the age is less than the mean age?
Mean=23.4 Julie, Joe, Susan 3/5 ANSWER= .6
500
what is the difference between sample size and number of samples?
What is sample size is the number of observational units in each sample, number of samples is how many samples are generated in the simulation
500
what is anecdotal evidence?
What is results from situations that come to mind easily and are of little value in scientific research
500
what is midrange?
What is the average of the min and max values