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

One example of a type of bias.

Survivorship, Undercoverage, Non-response, Voluntary Response, Response, Selection

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
This phrase is used to describe an observed effect so large that it would rarely occur by chance.
What is statistically significant?
200

The type of variable where the probability distribution only takes on a countable number of values.

What is a discrete random variable?

200

The formula to calculate the one-sample z statistic.

What is z = (x bar minus mu sub o) divided by (sigma divided by the square root of n) ?

300

If data is normally distributed, it is the rule that says roughly this percentage of points is within 1, 2, and 3 standard deviations of mean.

What is the 68-95-99.7 rule?

300

The r-value that indicates a stronger correlation between .87 and -.93

What is -.93

300

What type of error is committed when Ho is true but you reject it?

Type I

300

The condition involving the population size that must be satisfied to use formula for the sampling distribution for mean.

What is 'the population is at least 10 times the sample size'?

300

For a chi-square test, the expected counts should be greater than or equal to this number.

What is 5?

400
This calculator command can be used to find the area under a normal distribution and above an interval.
What is normalcdf?
400

What is the difference between an observational study and an experimental study?

Experimental study imposes treatment, observational study does not.

400
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?
400

If P(B|A)=P(B) for some random variables A and B, they are said to be this.

What is independent?

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 n times p hat & n times (1 - p hat) be greater than or equal to 10? (SRS could also be one of the two)

500

The square of standard deviation.

What is variance?

500
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)?
500

One way to increase statistical power.

What is to increase n, increase alpha, or use a one-tail test rather than a two-tail test?

500
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)?
500

b +/- t*SE

What is the confidence interval for slope beta of a true regression line?

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