Ecn 221 - Study guides, Class notes & Summaries

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 ...

ECN 221- Exam 3 Questions with Answers/ECN 221- Exam 3 Questions with Answers/ECN 221- Exam 3 Questions with Answers.

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...

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...

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 ...

ECN 221 ASU EXAM -1 QUESTIONS WITH COMPLETE SOLUTION GRADED A+

Lecture notes from all slides of chapter one for ECN 221

Introduction to graphical displays such as pie charts, bar charts, frequency distributions and uses in excel

Important formulas you need to know for Business Statistics (ECN 221) Exams.