Term 1 of 48
True or False? (|z| < 3) is a standard outlier
True
False
Term 2 of 48
What is the difference between quantitative and qualitative data?
Quantitative is subjective whereas qualitative is objective
Quantitative is discrete whereas qualitative is continuous
Quantitative is numerical whereas qualitative is categorical
Quantitative is ordinal whereas qualitative is nominal
Term 3 of 48
True or false? If we want to be able to reject the null hypothesis, we want our p-value to be
high.
True
False
Term 4 of 48
True or False? A "random" sample is representative of the population.
True
False
,Term 5 of 48
What does H0 stand for?
Type 1 Error
Null Hypothesis
Variation
Theory
Term 6 of 48
Define Sample
A random selection of data points that are not related to a population
The entire group of individuals or items that are being studied
A theoretical concept that does not apply to real-world scenarios
Subset of units of a population, Any set of output (object or numbers) produced by a
process
Term 7 of 48
What is this symbol called and what does it represent in statistics? x̄
Y or y hat, it represents the predicted value in regression
Z or z score, it represents the number of standard deviations from the mean
X or x bar, I don't know man, it represents sample mean
P or p value, It represents the probability of observing the data
Term 8 of 48
What is this symbol called and what does it represent in statistics? β
Kappa, represents the degree of agreement between two raters
Gamma, represents the rate of change in a variable
Lambda, represents the average rate of events in a poisson distribution
Beta, represents probability of a Type II error
,Term 9 of 48
What is this symbol called and what does it represent in statistics? σ
Delta, represents the change in a variable
Rho, represents the correlation coefficient between two variables
Theta, represents a parameter in a statistical model
Sigma, represents standard deviation for a population
Term 10 of 48
Management at Truly Scrumptious Confectioners knows that approximately 35 out of 100
viewers of their previous commercial stated that they were likely to purchase Truly Scrumptious
candy. They run a hypothesis test. The null hypothesis is that the mean number of people who
state that they would be likely to purchase the candy after viewing the new commercial is 35.
The alternative hypothesis is that the mean number of people who state that they would be
likely to purchase the candy is?
Less than 35
Less than 50
Less than 100
Greater than 35
Term 11 of 48
If the p- value is less than alpha, do you accept or reject the null hypothesis? (α > p- value)
Variation
Statistically significant
Accept the null hypothesis
Reject the null hypothesis
, Term 12 of 48
Define Experimental Unit
Uses sample data to make estimates, decisions, predictions, or other generalizations
about a larger set of data
Reject the null hypothesis
Presents information in a useful form; summary of a data set
Object upon which we collect data
Term 13 of 48
True or False? The Empirical Rule tells us that 85% of a data set is captured within a 2 standard
deviation interval.
True
False
Term 14 of 48
Management at Truly Scrumptious Confectioners knows that approximately 35 out of 100
viewers of their previous commercial stated that they were likely to purchase Truly Scrumptious
candy. Management has strong reason to believe that this new commercial will be more
effective but want to run a studyto find out for sure. What kind of statistical test should they
run?
An Insightful Operation
A Hypothesis Test
Observational
A Confidence Interval
Term 15 of 48
True or False? 99.7% of a data set is captured within a 3 standard deviation interval.
True
False
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