Organizing Data
Data Relationships
Producing Data & Experiments
Probability & Distributions
Inference & Tests
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 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 (or T procedure)?
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

Putting slips of paper in a hat with different treatments, mixing up the slips, and picking values out (without replacement).

What is random assignment to treatments in an experiment?

200
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?
200

The formula to calculate the one-sample t statistic.  This must be written on your white board.

What is t = (x bar minus mu) divided by (s divided by the square root of n) ?

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 fraction of the variables in the values of y that is explained by the LSRL 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

The conditions to use this test include the data is counts, the data is representative, and all expected counts be greater than or equal to 5.

What is the goodness of fit (or chi-square) test?

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

When interpreting the slope of a line this phrase must always be part of your interpretation.

What is we predict?

400
The 3 basic principles of experimental design.
What are control, randomize, and replicate?
400

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'?

400

Two of the conditions to be verified for inference about a proportion.

What are the population size be greater than or equal to 10n and you must have at least 10 expected successes and at least 10 expected failures? (SRS could also be one of the two)

500
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
500

In a linear regression model, this value represents the average distance from the observed y-values and the predicted y-values.

What is the standard deviation of the residuals?

500
When the conditions are inference are not met, decisions can be made by using this technique.

What is carry out a simulation that is based on the null being true to decide how unusual our sample was.

500

This theoretical model describes every possible sample of size n, calculating x-bar, for a single population.

What is the sampling distribution of a sample mean?

500

The null hypothesis for inference for the slope of a line

What is the null is that the true slope (beta) of the true regression line = 0? (which would mean all the predictions would be the same, and it would not be a useful line for predictions)

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