P Value
as your sample size increases, your p-value will generally do this
What is Decrease?
two events that cannot occur at the same time
What is Mutually Exclusive?
the probability of getting a sample result as extreme or more extreme than the one observed
What is the Null Hypothesis?
In a boxplot this specific feature is represented by the line inside the middle box.
What is Median?
sampling method involves dividing the population into groups and then taking a random sample from every group
What is Stratified Random Sampling?
If you decrease your significance level from 0.05 to 0.01 you also decrease this
What is Power?
probability that event $A$ occurs, given that event $B$ has already occurred
What is Conditional Probability?
when the p-value is less than the significance level (0.05).
What is reject the Null Hypothesis?
distribution has a long tail stretching out toward the larger, positive numbers
What is Skewed Right?
sampling method gives every possible group of $n$ individuals an equal chance of being chosen
What is a Simple Random Sample?
phrase is a favorite of Stats teachers to help students remember what to do when the p-value is very low
What is "If the p is low, the Null must go"?
the "mean" of a random variable, calculated by multiplying each outcome by its probability and summing them up
What is Expected Value?
the null hypothesis is always written as a statement of what?
What is equality?
standard way to describe a distribution’s Shape, Outliers, Center, and variability
what is SOCV?
difference between a bar chart and a histogram regarding the type of data they display
What is Categorical vs Quantitative data?
p-value of 0.03 means that if the null hypothesis is true, there is a 3% chance the observed results occurred due to this
What is random chance?
fixed number of trials, and there must be this many possible outcomes
What is success and failure?
When testing if two groups have the same mean, the Null Hypothesis is usually written as
What is zero?
measure of center is calculated by adding all data values and dividing by the number
What is the Mean?
experiment is called "Double" this if neither the subjects or the people measuring the results know which treatment was assigned
What is Double Blind?
When a p-value is high and we fail to reject
What is Convincing Evidence?
condition is met for a Binomial distribution if both are greater than or equal to this number.
What is 10?
the symbol used in the Alternative Hypothesis
What is not equal to?
tells you exactly how many standard deviations an individual observation falls above or below the mean
What is the z-score?
In an experiment, this is a fake treatment
What is a Placebo?