Show:
Organizing Data
Data Relationships
Descriptive Statistics
Distributions 101
Inference & Tests
Probability
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

The Mean and the Median are measures of this.

What are measures of center?

100
This distribution is symmetric and has a mean of 0 and a Standard Deviation of 1
What is the Standard Normal Distribution?
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)?
100

Expected value is another way of stating it.

What is the Mean of a Random Variable?

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 the correlation coefficient (or r)?
200
A measure of the variability of a data set.
What is Standard Deviation?
200
This direction of skew has a mean that is greater than the median.
What is skewed right?
200
The TI-84 calculator command to calculate a hypothesis test for the mean of a single sample where the population standard deviation is known.
What is Z Test?
200

Independent Events, Fixed Probability, Fixed number of events, Success/Failure are the 4 requirements for this distribution.

What is the Binomial Distribution?

300
This rule helps to determine if data is normally distributed by checking the percent of observations within each interval.
What is the 68-95-99.7 rule? Or What is the Empirical Rule?
300
Determines the accuracy of the line as a predictor of the data.
What is the coefficient of determination (or r squared)?
300
This measure is the number of standard deviations a value is from the mean on a normal distribution.
What is z-score?
300
This distribution is used when we don't know the population standard deviation.
What is the T-Distribution?
300
The conditions to use this test include all expected counts be greater than or equal to 1 and no more than 20% of all the expected counts be less than 5.
What is the goodness of fit (or chi-square) test?
300

Day and Night are an example of these kinds of events which don't overlap. 

What are Mutually Exclusive Events?

400
The square of the standard deviation.
What is the variance?
400
Applying a logarithmic transformation to both variables causes a power model to become this shape.
What is linear?
400
The measure of how often a value appears in a data set.
What is frequency?
400
This is the distribution we use when we want to know if attributes of categorical data are independent.
What is Chi-Square Distribution?
400
One of the conditions to be verified for inference about a proportion.
What are the population size be greater than or equal to 10n and n times p hat & n times (1 - p hat) be greater than or equal to 10? (SRS could also be one of the two)
400

The mean of a random variable with this distribution:

x     |    4       10       15

---------------------------

P(x) |    .5      .3      .2

What is 11?

500
This calculator command can be used to find the area under a normal distribution and within an interval.
What is normalcdf?
500
This plot should not have a pattern. If it does a transformation may need to be applied to achieve linearity.
What is a residual plot?
500
The formula for finding standard deviation.
What is "The Square Root of the Sum of the Squared Deviations from the Mean Divided by n-1"?
500
This distribution has 4 requirements for the data including Independent Events.
What is the binomial or geometric distribution?
500
This test determines whether a data set fits a predicted distribution of proportions.
What is Chi-Square Goodness of Fit Test?
500

The probability of the first success being before the 3rd trial when P(a) = .18

What is .3276?