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Normal Distributions and Z-Scores

Normal Distributions and Z-Scores

Normal Distributions and Z-Scores. Accelerated Math 3. Normal Distributions. Last year we learned about normal distributions and the Empirical Rule. Normal Distributions.

By renee
(435 views)

Lesson Objective

Lesson Objective

Lesson Objective. Learn the mechanics of using the table for the Normal Distribution. Given a region for a variable that follows the Normal Distribution, find the probability that a randomly selected item will fall in this region.

By star
(184 views)

Sampling Distributions

Sampling Distributions

Presentation 7. Sampling Distributions. Statistics VS parameters. Statistic – is a numerical value computed from a sample. Parameter – is a numerical value associated with a population.

By issac
(242 views)

Bennie Waller wallerbd@longwood.edu 434-395-2046 Longwood University 201 High Street Farmville, VA 23901

Bennie Waller wallerbd@longwood.edu 434-395-2046 Longwood University 201 High Street Farmville, VA 23901

Bennie Waller wallerbd@longwood.edu 434-395-2046 Longwood University 201 High Street Farmville, VA 23901. KIDS 1 2 3 3 4 5. MEAN MEDIAN MODE. Most widely used measure of dispersion is variance and standard deviation.

By mahlah
(103 views)

Outliers

Outliers

Outliers. Outliers are data points that are not like many of the other points, or values. Here we learn about some tools to detect them. age. x = 22. 24 26 28. 16 18 20.

By marlis
(129 views)

Introduction to Probability and Statistics Thirteenth Edition

Introduction to Probability and Statistics Thirteenth Edition

Introduction to Probability and Statistics Thirteenth Edition. Chapter 9 Large-Sample Tests of Hypotheses. Introduction. Suppose that a pharmaceutical company

By amanda
(118 views)

Variance and Standard Deviation

Variance and Standard Deviation

Variance and Standard Deviation. The most important measures of “spread” or dispersion. Sample Variance. The variance is the average squared deviation away from the mean. For a sample of size n, divide by n – 1. For a population, divide by n. Sample mean x. The standard deviation.

By clare
(186 views)

Chapter Two

Chapter Two

Chapter Two. Evan E. Amanda W. and Yunying Z. . Question. What is the true name for the 68-95-99.7 rule? Empirical rule Normal distribution Mean . Answer. A. Empirical rule . Question.

By iola
(114 views)

. . . PENNIES for the AGES . . .

. . . PENNIES for the AGES . . .

. . . PENNIES for the AGES . . . . Push the “Sample More Data” button on the screen and read the average age of a sample of 16 pennies taken from the jar. Note the horizontal and vertical scales on the grid here and then record that (rounded) average age using a properly scaled X . .

By venice
(108 views)

Last lecture summary

Last lecture summary

Last lecture summary. New stuff. Variability is measured by standard deviation Robust equivalent? Empirical rule about stdev? Percentiles? Normal distribution, standard normal distribution Sampling distribution, CLT. Variability in sample means Standard error Centrality in sample mean

By ponce
(77 views)

Algebra 2

Algebra 2

Algebra 2. Practice Item Guide April 2012 18 questions. NEW Directions for logging into TestNav. You must be on a Broad Run Computer . Login: SOL Password: SOL Domain: Elem Start – Programs Choose – subject & test to practice. TECHNOLOGY-ENHANCED ITEM TYPES.

By ashtyn
(131 views)

Normal Calculations

Normal Calculations

Normal Calculations. Presentation 1.13. Normal Calculations. There are typically two types of normal calculations. Calculate probabilities under the curve. Calculate scores given a probability. Calculate Probabilities. Many times it is helpful to know the likelihood of an event occuring.

By osma
(163 views)

Unit 5 Data Analysis

Unit 5 Data Analysis

Unit 5 Data Analysis. MM3D3. Empirical Rule. Normal Distributions . Normal distributions are based on two parameters Mean If you have population data use If you have sample data use Standard Deviation If you have population data use If you have sample data use s

By randy
(80 views)

Measures of Dispersion

Measures of Dispersion

Measures of Dispersion. How far the data is spread out. Range. Difference between the highest and lowest values. Variance. Includes all data values Measures average distance of squared values to mean Population Sample. Standard Deviation. Important value to study of statistics

By van
(115 views)

Measures of Location

Measures of Location

Measures of Location. The population mean of a data set is the average of all the data values. Sum of the values of the N observations. Number of observations in the population. Measures of Location. The population mean of a data set is the average of all the data values.

By ted
(62 views)

Calculating Population Parameters versus Sample Statistics

Calculating Population Parameters versus Sample Statistics

Calculating Population Parameters versus Sample Statistics. Usually only the symbols are different. However, the population variance has a different formula from the sample variance. To calculate the population variance, the population variation is divided by N not (n-1). Populations.

By cadee
(164 views)

Chapter 6 Continuous Probability Distribution

Chapter 6 Continuous Probability Distribution

Chapter 6 Continuous Probability Distribution. I. Basic Definitions II. Normal Distribution Probability density function and distribution table Characteristics - identify a normal distribution Compute probability The standard normal distribution Z Normal distribution Applications

By vin
(178 views)

Slides Prepared by JOHN S. LOUCKS St. Edward’s University

Slides Prepared by JOHN S. LOUCKS St. Edward’s University

Slides Prepared by JOHN S. LOUCKS St. Edward’s University. Chapter 3 Descriptive Statistics: Numerical Measures Part B. Measures of Distribution Shape, Relative Location, and Detecting Outliers. Exploratory Data Analysis. Measures of Association Between Two Variables.

By jayme
(125 views)

Sampling distributions

Sampling distributions

Sampling distributions. Example. Take random sample of 1 hour periods in an ER. Ask “how many patients arrived in that one hour period ?” Calculate statistic, say, the sample mean. Sample 1: 2 3 1 Mean = 2.0 Sample 2: 3 4 2 Mean = 3.0. Situation.

By sagira
(54 views)

Univariate Data Review

Univariate Data Review

Univariate Data Review. All data goes in L 1. Input the data into your calculator (Stat, Edit, Calc , 1-Var Stats) and find the 5-number summary. 1. a). 18, 20, 28.5, 38, 56. 62, 69, 77.5, 87, 99. b). c). 59, 61.5, 66, 69, 75. 2, 6, 8, 9, 10. All data goes in L 1.

By adair
(89 views)

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