Show:
Organizing Data
Data Relationships
Producing Data & Experiments
Probability & Distributions
Potpourri
100
This measure of center is more resistant to outliers than the mean.
What is the median?
100
observed y - predicted y
What is the residual?
100
This phrase is used to describe an observed effect so large that it would rarely occur by chance.
What is statistically significant?
100

This type of random variable requires a fixed number of trials.

What is a binomial random variable?

100

The pythagorean theorem of statistics

What is (varianceX1)^2 +(varianceX2)^2 = (Variance X1+X2)^2?

**Only true when X1 and X2 are independent.

200
To calculate, subtract the mean of the distribution from the observed x, then divide by the standard deviation.
What is the z-score (or standardized value)?
200
Measures the direction and strength of a linear relationship between two quantitative variables.
What is correlation (or r)?
200

randInt(1,9,3)

What is the calculator command for generating 3 random numbers from 1 to 9?

200

The type of variable where the probability distribution assigns probability as the area under the frequency curve above a specific interval.

What is a continuous random variable?

200

The math teacher that has been at L-S the longest

Who is Seth Weiss?

300
This rule helps to determine if data is normally distributed by checking the number of observations within each interval.
What is the 68-95-99.7 rule?
300

The percent of the variation in the values of y that is explained by the LSR of y on x.

What is the coefficient of determination (or r squared)?

300

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?

300

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)?

300

You might do this if the data set has a wide range of values and it is difficult to see the center on the graph.

What is 'reexpress the data'?

400
The square of the standard deviation.
What is the variance?
400

When is a histogram has this shape, the median will be greater than the mean. 

What is Skewed Left?

400

 3 basic principles of experimental design.

What are control, randomize, and replicate?

400

The condition involving the population size that sometimes must be checked in order to assume the trials are independent.

What is 'the 10% condition"?

400

This is when a subject in an experiment reports an improvement in a condition when they did not receive a real treatment.

What is 'the placebo effect'?

500

Q3 + 1.5(IQR)


What is the upper bound for determining if a data set has any outliers?

500

Refers to the reversal of the direction of an association when data from several groups are combined to form a single group.

What is Simpson's Paradox?

500

Refers to a sampling process that divides the population into homogenous groups and randomly selects individuals from each of the groups.

What is stratified random sampling?

500
This is the normal model that could be used to approximate a binomial model (n,p)

What is Normal(np, sqrt(npq))?

500

This is reported with survey results to account for the expected variation in the results in a random sample.

What is the margin of error?