Testing, Testing!
Probability
Collecting Data
Normal Curve
Graphing Data
100
This type of error occurs when falsely rejecting the null hypothesis.
What is Type I?
100
The probability of rolling a die twice and getting all 1s.
What is 1/36 or .0277777?
100
This type of bias is when people choose themselves to participate.
What is voluntary bias?
100
This tells you how many standard deviations from the mean an observation is.
What is Z-Score?
100
This type of chart uses bars to represent the frequency of data within certain intervals.
What is a histogram?
200
This type of significance test used for the mean of a single population when the standard deviation of the population is unknown.
What is a T-Test?
200
These events have no outcomes in common and can never occur simultaneously.
What is disjoint?
200
This sampling method is done when each combination of people have an equal chance of being selected.
What is a simple random sample?
200
In a normal curve, as _____ increases the curve flattens.
What is σ?
200
This type of graph displays a five-number summary of a dataset (minimum, first quartile, median, third quartile, and maximum)
What is boxplots?
300
As β increases, the significance level of the hypothesis test will ________.
What is decrease?
300
This type of random variable requires a fixed number of trials, each observation to be independent, and needs two outcomes.
Binomial random variable?
300
What is a reason for why a census is impractical?
What is a census is impossible/expensive/if destructive sampling you get extinction?
300
This rule measures 1, 2, and 3 standard deviations from the center of μ on a normal curve.
What is the Empirical Rule (68, 95, 99.7)?
300
These are the measures of center in a graph
What is mean, median, and mode?
400
These are all the conditions for a Z-Test.
What are the random condition, 10% condition, and large counts condition?
400
The probability of pulling a Queen given the card is red
What is .0769 or 1/13
400
The role of blinding in an experiment is to combat a possible source of _________.
What is confounding?
400
This is the square of standard deviation.
What is variance?
400
When reading a scatter plot, the strength and direction of the relationship between two variables are often quantified by this statistic.
What is the correlation coefficient (r)?
500
If you increase α the chance of a Type ___ error decreases.
What is Type II?
500
What is the name of this English philosophers theorem
What is Bayes Theorem?
500
As an experiment is repeated the experimental probability gets closer and closer to the true (theoretical) probability and the difference between the two probabilities will approach "0". This probability rule is...
What is the Law of Large Numbers?
500
Name 3 comparisons of t-distributions when compared to standard normal curve.
What is centered around 0, more spread out and shorter, more area under the tails, when you increase n, t-curves become more normal, can be no outliers in the sample data, degrees of freedom (n-1)?
500
These graphs are used to assess normality.
What is dot plots, boxplots, histograms, or normal probability ploy?