Study Guides
-
681.
The Density Function Help
A Pattern Emerges When working with large populations, and especially with continuous random variables, probabilities are defined differently than they are with small populations and discrete random variables. As the number of possible values of a random variable ...
Source: McGraw-Hill Professional -
682.
Two Common Distributions Help
Introduction to Two Common Distributions The nature of a probability density function can be described in the form of a distribution. Let's get a little bit acquainted with two classical types: the uniform distribution and the normal ...
Source: McGraw-Hill Professional -
683.
Basics of Probability Practice Test
Review the following concepts if necessary: The Probability Fallacy Help
Source: McGraw-Hill Professional -
684.
Percentiles Help
Percentiles in a Normal Distribution Percentiles divide a large data set into 100 intervals, each interval containing 1% of the elements in the set. There are 99 possible percentiles, not 100, because the percentiles represent the boundaries where the 100 ...
Source: McGraw-Hill Professional -
685.
Quartiles and Deciles Help
Quartiles in a Normal Distribution There are other ways to divide data sets besides the percentile scheme. It is common to specify points or boundaries that divide data into quarters or into tenths. A quartile or quartile point is a ...
Source: McGraw-Hill Professional -
686.
Intervals by Element Quantity Help
Introduction to Intervals by Element Quantitiy Percentiles, quartiles, and deciles can be confusing when statements are made such as, ''You are in the 99th percentile of this graduating class. That's the highest possible rank.'' Doubtless more than one student in ...
Source: McGraw-Hill Professional -
687.
Fixed Intervals Help
Introduction to Fixed Intervals In descriptive measures statistics, you can divided up data sets into subsets containing equal (or as nearly equal as possible) number of elements, and then observed the ranges of values in each subset. There's another approach: we ...
Source: McGraw-Hill Professional -
688.
Descriptive Measures Other Specifications Help
Other Specifications—Range There are additional descriptive measures that can be used to describe the characteristics of data. Let's look at the definitions of some of them. Range In a data set, or in any ...
Source: McGraw-Hill Professional -
689.
Descriptive Measures Practice Test
Review the following concepts if necessary: Percentiles Help Quartiles and ...
Source: McGraw-Hill Professional -
690.
Statistical Concepts Practice Test
Statistical Concepts Practice Test You may draw diagrams or use a calculator if necessary. A good score is at least 45 correct. If you take a standardized test and then you are told you are in the 50th percentile, this means ...
Source: McGraw-Hill Professional
