Basic Definitions & Concepts: Data: facts/figures from which conclusions can be drawn Data Set: data that are collected for particular study Elements: people, objects, events, or other entries Variable: any characteristic of an element Population: set of all elements about which we wish to draw conclusions Census: examination of all population measurements Sample: subset of the units of a population Population (Param.) & Sample (Stat.) Population: group of all items of interest
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1 Mathematics for Management Concept Summary Algebra Solving Linear Equations in One Variable Manipulate the equation using Rule 1 so that all the terms involving the variable (call it x) are on one side of the equation and all constants are on the other side. Then use Rule 2 to solve for x. Rule 1: Adding the same quantity to both sides of an equation does not change the set of solutions to that equation. Rule 2: Multiplying or dividing both sides of an equation by the same nonzero number
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and 20% of my data is more than 716.5 d) IQR = Q3 -Q1 = 716.5-393 = 323.5 ($’000) The middle 50% of my data are falling between 393($’000) and 716.5($’000) T0ask 4 a) Column1 | | | Mean | 551.211 | Standard Error | 34.573 | Median | 466.000 | Mode | 710.000 | Standard Deviation | 231.926 | Sample Variance | 53789.642 | Kurtosis | -0.162 | Skewness | 0.459 | Range | 1068.000 | Minimum | 112.000 | Maximum | 1180.000 | Sum | 24804.500 | Count
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look at three groups of univariate statistics, namely i) Frequency Distributions (ii) Measures of Central Tendency (iii) Measures of Dispersion We will also examine three bivariate techniques i) Crosstabs (ii) Tables of Means (iii) Correlation 2.1 Frequency Distributions - The frequency of a variable value is the number of times that value occurs in a set of data - A frequency distribution is simply a table of frequencies for all possible values of the variable
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(BHRM) BUSINESS STATISTICS (BBI 1224) Name : Student ID# : Semester : Academic Honesty Policy Statement I, hereby attest that contents of this attachment are my own work. Referenced works, articles, art, programs, papers or parts thereof are acknowledged at the end of this paper. This includes data excerpted from CD-ROMs, the Internet, other private networks, and other people’s disk of the computer system. Student’s Signature : |
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table below displays a week's worth of data on daily sales at the Crank It Louder Music Store. ??Over that time period, what was the mean daily level of sales? A. ?$3,489.79 ?B. $4,071.42 ?C. $1,643.23 D. $2,829.92 2. The table below displays a week's worth of data on daily sales at the Crank It Louder Music Store. ??Over that time period, what was the median daily level of sales? A. $1,643.23 B. ?$3,489.79 C. ?$3,130.46 D. ?$800.12 3. The histogram below displays the age distribution
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2.21 a. Concentrated between 38 and 46. b. Shape of distribution is slightly skewed left. Ratings have an upper limit but stretch out to the low side. c. Class 1 2 3 4 5 6 7 8 34 < x ≤ 36, 36 < x ≤ 38, 38 < x ≤ 40, 40 < x ≤ 42, 42 < x ≤ 44, 44 < x ≤ 46, 46 < x ≤ 48, more d. Class 1 2 3 4 5 6
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Understanding Business Research Terms and Concepts: Part 2 Rodney Goudy RES/351 July 6, 2015 Tracy Sipma Descriptive statistics Descriptive statistics suggests a straightforward quantitative outline of a data-set which has been gathered. It helps us comprehend the experimentation or data-set in-detail and tells people concerning the mandatory details that help show the data perceptively. Descriptive statistics, we just convey exactly what the data reveals and tell us. Most of the statistical
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Gender and Age-Related Differences for Seat Belt Usage Nehir E. Kurşun¹ and Fatih M. Yaşar² ¹Department of Fashion Design & Department of Psychology, Izmir University of Economics ²Department of Media and Communication, Izmir University of Economics Abstract The study of examined that gender and age-related differences in seat-belt usage or not usage at different travelling conditions. Moreover, seat belt usage or not
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Ballard Integrated Managed Services, Inc. University of Phoenix QNT/351 May 22, 2010 The assignment evaluates data presented by Ballard Integrated Managed Services, Inc. (BIMS) to examine the reasons for increase of turnover at the Douglas Medical Center (DMC), and to offer suggestions for workplace improvement to the General Manager of BIMS, Barbara Tucker. The report was prepared by Team A professionals
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