- 7.1.1: Statistical Literacy What is a population? Give three examples.
- 7.1.2: Statistical Literacy What is a random sample from a population? (Hi...
- 7.1.3: Statistical Literacy What is a population parameter? Give three exa...
- 7.1.4: Statistical Literacy What is a sample statistic? Give three examples.
- 7.1.5: Statistical Literacy What is the meaning of the term statistical in...
- 7.1.6: Statistical Literacy What is a sampling distribution?
- 7.1.7: Critical Thinking How do frequency tables, relative frequencies, an...
- 7.1.8: Critical Thinking How can relative frequencies be used to help us e...
- 7.1.9: Critical Thinking Give an example of a specific sampling distributi...
Solutions for Chapter 7.1: INTRODUCTION TO SAMPLING DISTRIBUTIONS
Full solutions for Understandable Statistics | 9th Edition
`-error (or `-risk)
In hypothesis testing, an error incurred by rejecting a null hypothesis when it is actually true (also called a type I error).
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
An equation for a conditional probability such as PA B ( | ) in terms of the reverse conditional probability PB A ( | ).
Sequences of independent trials with only two outcomes, generally called “success” and “failure,” in which the probability of success remains constant.
Binomial random variable
A discrete random variable that equals the number of successes in a ixed number of Bernoulli trials.
When y fx = ( ) and y is considered to be caused by x, x is sometimes called a causal variable
The mean of the conditional probability distribution of a random variable.
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
The variance of the conditional probability distribution of a random variable.
A correction factor used to improve the approximation to binomial probabilities from a normal distribution.
Continuous random variable.
A random variable with an interval (either inite or ininite) of real numbers for its range.
Continuous uniform random variable
A continuous random variable with range of a inite interval and a constant probability density function.
See Control chart.
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 .
Cumulative normal distribution function
The cumulative distribution of the standard normal distribution, often denoted as ?( ) x and tabulated in Appendix Table II.
Defects-per-unit control chart
See U chart
A model to relate a response to one or more regressors or factors that is developed from data obtained from the system.
Fisher’s least signiicant difference (LSD) method
A series of pair-wise hypothesis tests of treatment means in an experiment to determine which means differ.
Gamma random variable
A random variable that generalizes an Erlang random variable to noninteger values of the parameter r
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 .