Equations
x-µ / σ
What is Z-Score
Treatments are not assigned, just observed. Important for discovering trends and relationships
What is Observational Studies?
Events tha have no outcomes in common are disjoint
What is the Addition Rule?
Points of a distribution with large residuals
What are Outliers?
Gives values & probabilities associated with each possible x.
What is discrete probability distributions?
(r-1)(c-1)
What is the X2 Test of independence and homogeneity degrees of Freedom?
The group used to compare the factor to for effectiveness.
What is the Control Group?
The complementary rule
The science of collecting, analyzing, and drawing conclusions from data.
What is Satistics?
Two mutually exclusive outcomes, fixed number of trials (n), each trial is independent, the probability of success is the same for all trials
What are the properties for a binomial distribution?
statistic ± critical value (standard deviation of the statistic)
What is the equation to determine Confidence Interval?
Voluntary response, convenience sampling, under coverage, non-response, wording of the questions.
What are sources of Bias?
The Least Square Regression Line cannot be used to find values outside of the range of the original data.
Used to estimate the Population Parameter
What is Confidence Interval
Two mutually exclusive outcomes, each trial is independent, probability of success is the same for all trials, not a fixed number of trials.
σ x̄ = σx / √n
What is the standard deviation of the sample means?
Control, Randomize, Replicate, and Block.
What are the four principles of an experimental design?
The four conditions of a Bernoulli Trial
What is only two possible outcomes (success or failure), the probability of success is constant, trials are independent, fixed number of trials?
Assuming the null is true, the probability of obtaining the observed result or more extreme
What is the P-value?
If two marbles are selected at random from a bag containing 6 red marbles and 4 blue marbles, what are the odds that both marbles picked are red?
6/10 (5/9) = 30/90 = 1/3
(row total)(column total) / grand total
What is the expected counts equation for X2 tests of independence and homogeneity?
A count of a random variable.
What is discrete?
The long-run relative frequency of repeated independent events gets closer and closer to a single value
What is the Law of Large Numbers?
The probability that the test will reject the null hypothesis when the null hypothesis is false assuming the null is true
What its the Power of a Test
The probability of two events occurring is 1/18. If the probability of the first event occurring is 1/3, what is probability of the second event?
What is 1/6?