Ecn 221 - Study guides, Class notes & Summaries
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ECN 221 ASU EXAM -1 QUESTIONS WITH COMPLETE SOLUTION GRADED A+
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5 number summary and box plots - maximum 
Q3 
median 
Q1 
minimum 
outliers not based on zscore but IQR range (more than 1.5 IQR below Q1)*** 
A data set consists of all businesses in Tempe that accept Discover Card branded credit cards. The 
variables in the data set are the total amount of purchases using Discover Card credit cards and how 
many purchases were made using the card and all the data are for the year 2008. 
T/F: The data in this data set constitute a cross section, i.e., they are ...
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ECN 221- Exam 3 Questions with Answers.
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ECN 221- Exam 3 Questions with Answers/ECN 221- Exam 3 Questions with Answers/ECN 221- Exam 3 Questions with Answers.
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ECN 221 EXAM 1 2024-2025 QUESTIONS WITH COMPLETE ANSWERS
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Covariance: If x and y consistently vary in the same direction, the numerator will be - CORRECT ANSWER positive 
 
Deductive Reasoning - CORRECT ANSWER process of drawing a conclusion from a principle already known or assumed (The sun rises every morning; therefore, the sun will rise on Tuesday morning.) 
 
Inductive Reasoning - CORRECT ANSWER -A type of logic in which generalizations are based on a large number of specific observations. 
 
-Use particular to explain the...
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ECN 221 ASU EXAM 1 2024-2025 QUESTIONS WITH COMPLETE ANSWERS
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nominal data - CORRECT ANSWER names indicating characteristic 
ex: NYSE, NASDAQ 
 
ordinal data - CORRECT ANSWER can be ordered/ranked 
ex: gold, silver, bronze 
 
interval data - CORRECT ANSWER quantitative AND can be ranked BUT is a fixed unit of measurement 
ex: SAT scores, credit score 
 
ratio data - CORRECT ANSWER quantitative AND can be ranked BUT is a fixed unit of measurement AND the ratio is meaningful 
 
categorical data (qualitative) - CORRECT A...
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ASU ECN 221 EXAM 1 STUDY GUIDE 2024-2025 QUESTIONS WITH COMPLETE ANSWERS
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which of the following is a measure of dispersion? - CORRECT ANSWER interquartile range 
 
the sum of deviations of the individual data elements from their mean is_____. - CORRECT ANSWER always equal to zero 
 
the value of the sum of the squared deviations form the mean, i.e., summation(x-xbar)^2 must always be______. - CORRECT ANSWER at least zero 
 
the interquartile range is_________. - CORRECT ANSWER the difference between the third and first quartiles 
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ECN 221 ASU EXAM -1 QUESTIONS WITH COMPLETE SOLUTION GRADED A+
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ECN 221 ASU EXAM -1 QUESTIONS WITH COMPLETE SOLUTION GRADED A+
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ECN 212 ASU VALUE PACK| DOWNLOAD TO SCORE A+
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ASU ECN 221 EXAM 1 STUDY GUIDE 2024-2025 QUESTIONS WITH COMPLETE ANSWERS
ECN 211 EXAM 1 REVIEW ASU 2024-2025 QUESTIONS WITH COMPLETE ANSWERS
ECN 221 ASU EXAM 1 2024-2025 QUESTIONS WITH COMPLETE ANSWERS
ECN 221 EXAM 1 2024-2025 QUESTIONS WITH COMPLETE ANSWERS
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Chapter One Notes - ECN 221
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Lecture notes from all slides of chapter one for ECN 221
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introduction to graphical displays
- Class notes • 4 pages • 2022
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Introduction to graphical displays such as pie charts, bar charts, frequency distributions and uses in excel
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ECN 221 Formulas for Exams: Business Statistics
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Important formulas you need to know for Business Statistics (ECN 221) Exams.
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