analysis decision making and absorption costing
Survey of project management officers Analysis of project performance information received, impact on decision making and project completion success or failure
Ngày tải lên :
01/06/2014, 14:04
... such as communications management and data and information collection and analysis that can be used to support the delivery of projects and executive-level decision- making relative to management ... strategic (decision- making) and tactical (operational) organizations of the business As such the PMO can provide such capabilities as analysis of capacity and performance of the operations and standardization ... Opportunity Decisions Take (Now) Delay (Later) Deny (Never) Tactical (operations) Customer PMO Decision Data Capacity Performance Standards Analysis Figure Strategic and Operations Decision- making...
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Statistics for business decision making and analysis 2nd edition stine test bank
Ngày tải lên :
17/11/2017, 16:46
... permit applications The new data table consists of Date and the Total Number of Campers on that date This is an example of the data, and generating results in data that are referred to as ... this data? (a) Bar graph (b) Time Series (c) Time plot (d) Histogram Section 2.2 – Categorical and Numerical Data [Objective: Distinguish categorical from numerical variables Be aware that some ... UNLIKELY UNSURE LIKELY YES The summary of the data from the responses consists of the “Zip Code,” and the “Return Status” of the camper What type of variable is “Return Status”? (a) Ordinal (b)...
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Statistics for business decision making and analysis robert stine and foster chapter 01
Ngày tải lên :
10/01/2018, 15:59
... Good models simplify reality Finding real patterns helps us to understand data, plan for the future, and make better decisions of 18 Copyright © 2011 Pearson Education, Inc 1.2 Previews Predicting ... with statistics Variation, patterns and models of 18 Copyright © 2011 Pearson Education, Inc 1.1 What is Statistics? Statistics as a Discipline Science and art of extracting answers from data ... October Actual employment for October is less than expected and below the anticipated range This surprising result breaks from the pattern and deserves attention (the Katrina effect?) 12 of 18 Copyright...
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Statistics for business decision making and analysis robert stine and foster chapter 02
Ngày tải lên :
10/01/2018, 15:59
... Identify group membership Type of purchase made and Brand of bike are examples of 25 Copyright © 2011 Pearson Education, Inc 2.2 Categorical and Numerical Data Numerical Data Also called quantitative ... Improve interpretability with meaningful names, formatting and units of 25 Copyright © 2011 Pearson Education, Inc 2.2 Categorical and Numerical Data Categorical Data Also called qualitative ... cases Have measurement units Size of bike (cm) and Amount spent ($) are examples of 25 Copyright © 2011 Pearson Education, Inc 2.2 Categorical and Numerical Data Measurement Scales Nominal...
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Statistics for business decision making and analysis robert stine and foster chapter 03
Ngày tải lên :
10/01/2018, 15:59
... Infineon and Samsung increased their shares from 1999 to 2002 It appears to have been at the expense of smaller companies 23 of 28 Copyright © 2011 Pearson Education, Inc 3.4 Mode and Median ... At Data of 28 Copyright © 2011 Pearson Education, Inc 3.2 Charts of Categorical Data Bar Charts and Pie Charts Unless you need to know exact counts, charts are better than tables for summarizing ... more than five categories The two most common displays of a categorical variable are a bar chart and a pie chart of 28 Copyright © 2011 Pearson Education, Inc 3.2 Charts of Categorical Data The...
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Statistics for business decision making and analysis robert stine and foster chapter 04
Ngày tải lên :
10/01/2018, 16:00
... Education, Inc Best Practices Be sure that data are numerical when using histograms and summaries such as the mean and standard deviation Summarize the distribution of a numerical variable with a ... 4M Example 4.1: MAKING M&M’s Motivation How many M&M’s are needed to fill a bag labeled to weigh 1.6 ounces? 18 of 42 Copyright © 2011 Pearson Education, Inc 4M Example 4.1: MAKING M&M’s Method ... use the ratio of the standard deviation to the mean (known as the coefficient of variation) s cv y 19 of 42 Copyright © 2011 Pearson Education, Inc 4M Example 4.1: MAKING M&M’s Mechanics Mean...
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Statistics for business decision making and analysis robert stine and foster chapter 05
Ngày tải lên :
10/01/2018, 16:00
... Education, Inc 5.1 Contingency Tables Marginal and Conditional Distributions • Marginal distributions appear in the “margins” of a contingency table and represent the totals (frequencies) for each ... the percentage of purchases among visitors from RecipeSource to be much less than for MSN and Yahoo • Host and Purchase are associated of 39 Copyright © 2011 Pearson Education, Inc 5.1 Contingency ... group (students or staff) and attitude toward sharing copyrighted music 32 of 39 Copyright © 2011 Pearson Education, Inc 5.3 Strength of Association Checklist: Chi-Squared and Cramer’s V Verify...
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Statistics for business decision making and analysis robert stine and foster chapter 06
Ngày tải lên :
10/01/2018, 16:00
... measurement and is therefore difficult to interpret of 30 Copyright © 2011 Pearson Education, Inc 6.3 Measuring Association Correlation (r) cov( x, y ) corr( x, y ) = S x Sy Standardized ... association (has no units) Always between -1 and +1 Easy to interpret 10 of 30 Copyright © 2011 Pearson Education, Inc 6.3 Measuring Association Gas Consumption and Heating Degree Days Cov (HDD, Gas) ... association between sales at the retail outlets and distance to nearest competitor? For 55 stores in the chain, data are gathered for total sales in the prior year and distance in miles from the nearest...
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Statistics for business decision making and analysis robert stine and foster chapter 07
Ngày tải lên :
10/01/2018, 16:00
... Probability Rule 5: General Addition Rule The intersection of A and B contains the outcomes in both A and B Denoted as A ∩ B read “A and B” 16 of 32 Copyright © 2011 Pearson Education, Inc 7.2 ... Multiplication Rule Two events A and B are independent if the probability that both A and B occur is the product of the probabilities of the two events P (A and B) = P(A) X P(B) 22 of 32 Copyright ... agent answers an easy call? An easy call can be handled by a first-tier agent; a hard call needs further assistance Two possible outcomes: easy and hard calls Are they equally likely? of 32...
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Statistics for business decision making and analysis robert stine and foster chapter 08
Ngày tải lên :
10/01/2018, 16:00
... probability of two events A and B is the product of the marginal probability of one times the conditional probability of the other P(A and B) = P(A) x P(B І A) P(A and B) = P(B) x P(A І B) B 16 ... to Probability Conditional Probabilities Show Purchases are more likely from MSN and Yahoo P(Yes І MSN) = P(Yes and MSN) / P(MSN) = 0.016 / 0.412 = 0.039 P(Yes І RecipeSource) ≈ 0.000 P(Yes І ... Events The Multiplication Rule Disjoint events are never independent If A and B are disjoint, then P(A І B) = P(A and B) / P(B) = / P(B) = ≠ P(A) 17 of 40 Copyright © 2011 Pearson Education,...
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Statistics for business decision making and analysis robert stine and foster chapter 09
Ngày tải lên :
10/01/2018, 16:00
... Education, Inc 9.1 Random Variables Graph of X = Change in Price of IBM of 33 Copyright © 2011 Pearson Education, Inc 9.1 Random Variables Random Variables as Models A random variable is a ... Practices Use random variables to represent uncertain outcomes Draw the random variable Recognize that random variables represent models Keep track of the units of a random variable 32 ... uncertain outcomes of a random process Denoted by X Defined by listing all possible outcomes and their associated probabilities of 33 Copyright © 2011 Pearson Education, Inc 9.1 Random Variables...
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Statistics for business decision making and analysis robert stine and foster chapter 10
Ngày tải lên :
10/01/2018, 16:00
... 10.1 Portfolios and Random Variables Probability Distribution for the Two Stocks of 44 Copyright © 2011 Pearson Education, Inc 10.1 Portfolios and Random Variables Comparisons and the Sharpe ... 2011 Pearson Education, Inc 10.5 IID Random Variables Addition Rule for iid Random Variables If n random variables (X1, X2, …, Xn) are iid with mean µx and standard deviation σx, E(X1 + X2 +…+ Xn) ... form a portfolio? Need to manipulate several random variables at once to understand portfolios Since stocks tend to rise and fall together, random variables for these events must capture dependence...
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Statistics for business decision making and analysis robert stine and foster chapter 11
Ngày tải lên :
10/01/2018, 16:00
... a discrete random variable to model counts and provide a method for finding probabilities of 30 Copyright © 2011 Pearson Education, Inc 11.1 Random Variables for Counts Bernoulli Random Variable ... defects and the standard deviation? 24 of 30 Copyright © 2011 Pearson Education, Inc 4M Example 11.2: DEFECTS IN SEMICONDUCTORS Method The random variable is the number of defects on a randomly ... 2011 Pearson Education, Inc 11.1 Random Variables for Counts Counting Successes (Binomial) Y, the sum of iid Bernoulli random variables, is a binomial random variable Y = number of success...
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Statistics for business decision making and analysis robert stine and foster chapter 12
Ngày tải lên :
10/01/2018, 16:00
... Normal Random Variable Definition A continuous random variable whose probability distribution defines a standard bell-shaped curve of 45 Copyright © 2011 Pearson Education, Inc 12.1 Normal Random ... Normal Random Variable Standard Normal Distribution (µ = 0; σ2 = 1) 14 of 45 Copyright © 2011 Pearson Education, Inc 12.1 Normal Random Variable Normal Probability Distribution A normal random ... independent random variables of comparable variance tends to a normal distribution as the number of summed random variables increases of 45 Copyright © 2011 Pearson Education, Inc 12.1 Normal Random...
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Statistics for business decision making and analysis robert stine and foster chapter 13
Ngày tải lên :
10/01/2018, 16:00
... population at random Larger populations not require larger samples of 36 Copyright © 2011 Pearson Education, Inc 13.1 Two Surprising Properties of Sampling Randomization A randomly selected ... Award determined? By focusing on a subset of the whole group (a sample) By making sure that items are selected randomly from the larger group of 36 Copyright © 2011 Pearson Education, Inc 13.1 ... Chapter 13 Samples and Surveys Copyright © 2011 Pearson Education, Inc 13.1 Two Surprising Properties of Sampling How is the winning car model of J.D Power and Associates Initial Quality...
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Statistics for business decision making and analysis robert stine and foster chapter 14
Ngày tải lên :
10/01/2018, 16:00
... skewness and larger than 10 times the absolute value of the kurtosis and n > 10K 32 n > K4 10 of 40 Copyright © 2011 Pearson Education, Inc 14.1 Sampling Distribution of the Mean Standard Error ... Sampling Distribution of the Mean Standard Error of the Mean The standard error is proportional to σ As data become more variable, averages become more variable The standard error is inversely proportional ... measurements from a process with mean µ and standard deviation σ are µ ± zα/2 σ/ The multiplier zα/2 controls α, the chance of a Type I error For example, z0.025 = 1.96 and z0.005 = 2.58 n 29 of 40 Copyright...
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Statistics for business decision making and analysis robert stine and foster chapter 15
Ngày tải lên :
10/01/2018, 16:00
... of these samples, the interval formed by reaching 1.96 standard errors to the left and right of will contain p p ˆ The estimated standard error (se) is used in constructing the confidence interval ... Interval for p SRS condition The sample is a simple random sample from the relevant population Sample size condition (for proportion) Both n and n are larger than 10 (1 − pˆ ) ˆ p 11 of 41 Copyright ... population proportion that will accept the offer is between about 12% and 16% A larger sample size will reduce the estimated standard error resulting in a narrower interval (a more precise estimate...
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Statistics for business decision making and analysis robert stine and foster chapter 16
Ngày tải lên :
10/01/2018, 16:00
... Copyright © 2011 Pearson Education, Inc 16.1 Concepts of Statistical Tests Type I and II Errors indicates a correct decision of 40 Copyright © 2011 Pearson Education, Inc 16.1 Concepts of Statistical ... Proportion z–Test and p-Value p-Value: the largest chance of a Type I error if H0 is rejected based on the observed test statistic z-Test: test of H0 based on a count of the standard errors separating ... Checklist SRS condition: the sample is a simple random sample from the relevant population Sample size condition (for proportion): both np0 and n(1 p0 ) are larger than 10 19 of 40 Copyright...
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Statistics for business decision making and analysis robert stine and foster chapter 17
Ngày tải lên :
10/01/2018, 16:00
... that moves the sampling distribution of closer to ½ and away pˆ from the troublesome boundaries at and Add four artificial cases (2 successes and failures) to create an adjusted proportion ~ ... interval for an independent draw from a normal population is where x ± tα / ,n−1 s + n and s estimate µ and σ x 18 of 35 Copyright © 2011 Pearson Education, Inc 17.3 Prediction Intervals Nonparametric ... with median θ, then we know The probability that a random draw from the population is less than or equal to θ is ½, The observations in the random sample are independent 10 of 35 Copyright © 2011...
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Statistics for business decision making and analysis robert stine and foster chapter 18
Ngày tải lên :
10/01/2018, 16:00
... the analysis by forming the difference within each pair (i.e., di = xi – yi ) A two-sample analysis becomes a one-sample analysis Let d denote the mean of the differences and sd their standard ... Motivation A department store sampled customers from the east and west and each was shown designs for the coming fall season (one featuring red and the other violet) If customers in the two regions differ ... PREFERENCES Method Data were collected on a random sample of 60 customers from the east and 72 from the west Construct a 95% confidence interval for pE - p W SRS and sample size conditions are satisfied...
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