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 3.T3.1: Section I: Multiple Choice Select the best answer for each question...
 3.T3.2: Section I: Multiple Choice Select the best answer for each question...
 3.T3.3: Section I: Multiple Choice Select the best answer for each question...
 3.T3.4: Section I: Multiple Choice Select the best answer for each question...
 3.T3.5: Section I: Multiple Choice Select the best answer for each question...
 3.T3.6: Section I: Multiple Choice Select the best answer for each question...
 3.T3.7: Section I: Multiple Choice Select the best answer for each question...
 3.T3.8: Section I: Multiple Choice Select the best answer for each question...
 3.T3.9: Section I: Multiple Choice Select the best answer for each question...
 3.T3.10: Section I: Multiple Choice Select the best answer for each question...
 3.T3.11: Section II: Free Response Show all your work. Indicate clearly the ...
 3.T3.12: Section II: Free Response Show all your work. Indicate clearly the ...
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Solutions for Chapter 3: Describing Relationships
Full solutions for The Practice of Statistics  5th Edition
ISBN: 9781464108730
Solutions for Chapter 3: Describing Relationships
Get Full SolutionsThis textbook survival guide was created for the textbook: The Practice of Statistics, edition: 5. Chapter 3: Describing Relationships includes 19 full stepbystep solutions. Since 19 problems in chapter 3: Describing Relationships have been answered, more than 36001 students have viewed full stepbystep solutions from this chapter. The Practice of Statistics was written by and is associated to the ISBN: 9781464108730. This expansive textbook survival guide covers the following chapters and their solutions.

Asymptotic relative eficiency (ARE)
Used to compare hypothesis tests. The ARE of one test relative to another is the limiting ratio of the sample sizes necessary to obtain identical error probabilities for the two procedures.

Attribute
A qualitative characteristic of an item or unit, usually arising in quality control. For example, classifying production units as defective or nondefective results in attributes data.

Average run length, or ARL
The average number of samples taken in a process monitoring or inspection scheme until the scheme signals that the process is operating at a level different from the level in which it began.

Bernoulli trials
Sequences of independent trials with only two outcomes, generally called “success” and “failure,” in which the probability of success remains constant.

Bias
An effect that systematically distorts a statistical result or estimate, preventing it from representing the true quantity of interest.

Coeficient of determination
See R 2 .

Conditional probability distribution
The distribution of a random variable given that the random experiment produces an outcome in an event. The given event might specify values for one or more other random variables

Conidence level
Another term for the conidence coeficient.

Correction factor
A term used for the quantity ( / )( ) 1 1 2 n xi i n ? = that is subtracted from xi i n 2 ? =1 to give the corrected sum of squares deined as (/ ) ( ) 1 1 2 n xx i x i n ? = i ? . The correction factor can also be written as nx 2 .

Dependent variable
The response variable in regression or a designed experiment.

Distribution free method(s)
Any method of inference (hypothesis testing or conidence interval construction) that does not depend on the form of the underlying distribution of the observations. Sometimes called nonparametric method(s).

Enumerative study
A study in which a sample from a population is used to make inference to the population. See Analytic study

Error propagation
An analysis of how the variance of the random variable that represents that output of a system depends on the variances of the inputs. A formula exists when the output is a linear function of the inputs and the formula is simpliied if the inputs are assumed to be independent.

Exhaustive
A property of a collection of events that indicates that their union equals the sample space.

Exponential random variable
A series of tests in which changes are made to the system under study

F distribution.
The distribution of the random variable deined as the ratio of two independent chisquare random variables, each divided by its number of degrees of freedom.

Finite population correction factor
A term in the formula for the variance of a hypergeometric random variable.

Fractional factorial experiment
A type of factorial experiment in which not all possible treatment combinations are run. This is usually done to reduce the size of an experiment with several factors.

Geometric mean.
The geometric mean of a set of n positive data values is the nth root of the product of the data values; that is, g x i n i n = ( ) = / w 1 1 .

Hat matrix.
In multiple regression, the matrix H XXX X = ( ) ? ? 1 . This a projection matrix that maps the vector of observed response values into a vector of itted values by yˆ = = X X X X y Hy ( ) ? ? ?1 .