Organizing Data
This measure of center is more resistant to outliers than the mean.
What is the median?
observed y - predicted y
What is the residual?
This phrase is used to describe an observed effect so large that it would rarely occur by chance.
What is statistically significant?
This type of random variable requires a fixed number of trials.
What is a binomial random variable?
Heads or Tails?
Tails - Plus 200
Heads - Minus 100
To calculate, subtract the mean of the distribution from the observed x, then divide by the standard deviation.
What is the z-score?
Measures the direction and strength of a linear relationship between two quantitative variables.
What is correlation (or r)?
randInt(1,9,3)
What is the calculator command for generating 3 random numbers from 1 to 9?
The type of variable where the probability distribution assigns probability as the area under the density curve above a specific interval.
What is a continuous random variable?
Free win, Lucky.
You got 400 points
This rule determines if there are outliers, without using standard deviation.
What is the IQR rule?
The fraction of the variables in the values of y that is explained by the LSR of y on x.
What is the coefficient of determination (or r squared)?
This experimental design involves the random assignment of units to treatments which are carried out separately within each group of units known to be similar in some way that is expected to affect the responses.
What is block design?
Events that have no outcomes in common and can never occur simultaneously, for which the addition rule is used.
What are disjoint events (or mutually exclusive events)?
The dice are fair, six sided dice. Guess the number he rolled for each dice, for each dice you get right you win 300 points.
Dice A - 4
Dice B - 4
Dice C -2
The square of the standard deviation.
What is Variance?
Applying a logarithmic transformation to both variables causes this type of model to become linear.
What is a power model?
The 3 basic principles of experimental design.
What are control, randomize, and replicate?
The condition involving the population size that must be satisfied to use sigma divided by the square root of n as the standard deviation of a sampling distribution.
What is 'the population is at least 10 times the sample size'?
If selecting randomly what are the chances you get this question right?
A) 25% B) 0%
C) 50% D) 25%
This is paradoxical, you are unlucky and lost. Womp womp
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
Refers to the reversal of the direction of a comparison or an association when data from several groups are combined to form a single group.
What is Simpson's Paradox?
The five steps of a simulation.
What are state/describe the problem, state assumptions, assign digits, simulate repetition, and state the conclusion?
The formula to determine the variance for a discrete random variable with three possible values.
What is sigma sub x squared = (the square of the difference between x sub 1 and mu multiplied by p sub 1) + (the square of the difference between x sub 2 and mu multiplied by p sub 2) + (the square of the difference between x sub 3 and mu multiplied by p sub 3) ?
What is 36?