- Chapter 1.1: What is the level of measurement for each of the following variable...
- Chapter 1.2: What is the level of measurement for these items related to the new...
- Chapter 1.3: Look in the latest edition of USA Today or your local newspaper and...
- Chapter 1.4: For each of the following, determine whether the group is a sample ...
- Chapter 1.5: Explain the difference between qualitative and quantitative variabl...
- Chapter 1.6: Explain the difference between a sample and a population
- Chapter 1.7: Explain the difference between a discrete and a continuous variable...
- Chapter 1.8: For the following questions, would you collect information using a ...
- Chapter 1.9: Exits along interstate highways were formerly numbered successively...
- Chapter 1.10: A poll solicits a large number of college undergraduates for inform...
- Chapter 1.11: Barnes & Noble stores recently began selling the Nook. With this de...
- Chapter 1.12: Utilize the concepts of sample and population to describe how a pre...
- Chapter 1.13: Place these variables in the following classification tables. For e...
- Chapter 1.14: Using data from such publications as the Statistical Abstract of th...
- Chapter 1.15: The Struthers Wells Corporation employs more than 10,000 white coll...
- Chapter 1.16: AVX Stereo Equipment, Inc., recently began a no-hassles return poli...
- Chapter 1.17: The following chart depicts the average amounts spent by consumers ...
- Chapter 1.18: The following chart depicts the average amounts spent by consumers ...
- Chapter 1.19: The following chart depicts the earnings in billions of dollars for...
- Chapter 1.20: Refer to the Real Estate data at the back of the text, which report...
- Chapter 1.21: Refer to the Baseball 2009 data, which report information on the 30...
- Chapter 1.22: Refer to the Buena School District bus data, which report informati...
Solutions for Chapter Chapter 1: What Is Statistics?
Full solutions for Statistical Techniques in Business and Economics | 15th Edition
2 k p - factorial experiment
A fractional factorial experiment with k factors tested in a 2 ? p fraction with all factors tested at only two levels (settings) each
Adjusted R 2
A variation of the R 2 statistic that compensates for the number of parameters in a regression model. Essentially, the adjustment is a penalty for increasing the number of parameters in the model. Alias. In a fractional factorial experiment when certain factor effects cannot be estimated uniquely, they are said to be aliased.
An equation for a conditional probability such as PA B ( | ) in terms of the reverse conditional probability PB A ( | ).
Binomial random variable
A discrete random variable that equals the number of successes in a ixed number of Bernoulli trials.
Box plot (or box and whisker plot)
A graphical display of data in which the box contains the middle 50% of the data (the interquartile range) with the median dividing it, and the whiskers extend to the smallest and largest values (or some deined lower and upper limits).
The probability of an event given that the random experiment produces an outcome in another event.
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
A probability distribution for a continuous random variable.
In the most general usage, a measure of the interdependence among data. The concept may include more than two variables. The term is most commonly used in a narrow sense to express the relationship between quantitative variables or ranks.
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 .
Another name for factors that are arranged in a factorial experiment.
Cumulative normal distribution function
The cumulative distribution of the standard normal distribution, often denoted as ?( ) x and tabulated in Appendix Table II.
A parameter in a tabular CUSUM algorithm that is determined from a trade-off between false alarms and the detection of assignable causes.
Defects-per-unit control chart
See U chart
Degrees of freedom.
The number of independent comparisons that can be made among the elements of a sample. The term is analogous to the number of degrees of freedom for an object in a dynamic system, which is the number of independent coordinates required to determine the motion of the object.
Another name for a cumulative distribution function.
A model to relate a response to one or more regressors or factors that is developed from data obtained from the system.
The distribution of the random variable deined as the ratio of two independent chi-square 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.
A function used in the probability density function of a gamma random variable that can be considered to extend factorials