- 10.1.1: Statistical Literacy When drawing a scatter diagram, along which ax...
- 10.1.2: Statistical Literacy Suppose two variables are positively correlate...
- 10.1.3: Statistical Literacy Suppose two variables are negatively correlate...
- 10.1.4: Statistical Literacy Describe the relationshop between two variable...
- 10.1.5: Critical Thinking: Linear Correlation Look at the following diagram...
- 10.1.6: Critical Thinking: Linear Correlation Look at the following diagram...
- 10.1.7: Critical Thinking: Lurking Variables Over the past few years, there...
- 10.1.8: Critical Thinking: Lurking Variables Over the past decade, there ha...
- 10.1.9: Critical Thinking: Lurking Variables Over the past 50 years, there ...
- 10.1.10: Critical Thinking: Lurking Variables Over the past 30 years in the ...
- 10.1.11: Veterinary Science: Shetland Ponies How much should a healthy Shetl...
- 10.1.12: Health Insurance: Administrative Cost The following data are based ...
- 10.1.13: Meteorology: Cyclones Can a low barometer reading be used to predic...
- 10.1.14: Geology: Earthquakes Is the magnitude of an earthquake related to t...
- 10.1.15: Baseball: Batting Averages and Home Runs In baseball, is there a li...
- 10.1.16: University Crime: FBI Report Do larger universities tend to have mo...
- 10.1.17: Expand Your Knowledge: Effect of Scale on Scatter Diagram The initi...
- 10.1.18: Expand Your Knowledge: Effect on r of Exchanging x and y Values Exa...
- 10.1.19: Expand Your Knowledge: Using a Table to Test r The correlation coef...
- 10.1.20: Expand Your Knowledge: Sample Size and Significance of Correlation ...
- 10.1.21: Expand Your Knowledge: Correlation of Averages Fuming because you a...
- 10.1.22: Expand Your Knowledge: Dependent Variables In Section 5.1, we studi...
Solutions for Chapter 10.1: CORRELATION AND REGRESSION
Full solutions for Understandable Statistics | 9th Edition
In hypothesis testing, a region in the sample space of the test statistic such that if the test statistic falls within it, the null hypothesis cannot be rejected. This terminology is used because rejection of H0 is always a strong conclusion and acceptance of H0 is generally a weak conclusion
All possible (subsets) regressions
A method of variable selection in regression that examines all possible subsets of the candidate regressor variables. Eficient computer algorithms have been developed for implementing all possible regressions
See Arithmetic mean.
Data consisting of counts or observations that can be classiied into categories. The categories may be descriptive.
Any test of signiicance based on the chi-square distribution. The most common chi-square tests are (1) testing hypotheses about the variance or standard deviation of a normal distribution and (2) testing goodness of it of a theoretical distribution to sample data
Coeficient of determination
See R 2 .
Components of variance
The individual components of the total variance that are attributable to speciic sources. This usually refers to the individual variance components arising from a random or mixed model analysis of variance.
The variance of the conditional probability distribution of a random variable.
An estimator that converges in probability to the true value of the estimated parameter as the sample size increases.
A probability distribution for a continuous random variable.
Continuous random variable.
A random variable with an interval (either inite or ininite) of real numbers for its range.
A dimensionless measure of the linear association between two variables, usually lying in the interval from ?1 to +1, with zero indicating the absence of correlation (but not necessarily the independence of the two variables).
A square matrix that contains the correlations among a set of random variables, say, XX X 1 2 k , ,…, . The main diagonal elements of the matrix are unity and the off-diagonal elements rij are the correlations between Xi and Xj .
The value of a statistic corresponding to a stated signiicance level as determined from the sampling distribution. For example, if PZ z PZ ( )( .) . ? =? = 0 025 . 1 96 0 025, then z0 025 . = 1 9. 6 is the critical value of z at the 0.025 level of signiicance. Crossed factors. Another name for factors that are arranged in a factorial experiment.
W. Edwards Deming (1900–1993) was a leader in the use of statistical quality control.
A model to relate a response to one or more regressors or factors that is developed from data obtained from the system.
A subset of a sample space.
Exponential random variable
A series of tests in which changes are made to the system under study
Another name for the normal distribution, based on the strong connection of Karl F. Gauss to the normal distribution; often used in physics and electrical engineering applications
A function that is used to determine properties of the probability distribution of a random variable. See Moment-generating function