ecn 221 asu
Arizona State University
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ECN 221 ASU Arizona State University -ECN 221 ASU Exam 2 Review Question and answers already passed 2025
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--16May 20252024/2025A+Available in bundle
- ECN 221 ASU Arizona State University -ECN 221 ASU Exam 2 Review Question and answers already passed 2025 
 
*normal distribution* 
Converting to z-scores - correct answer Subtracting the mean and dividing it by the standard deviation 
 
*normal distribution* 
To find the probability of a value being less than or equal to x... - correct answer 1. Convert X to a z value by subtracting mean and dividing by the standard deviation 
2. Then put in excel as =NORM.S.DIST(z,true) 
 
*normal distribut...
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STUVIAMAESTRO254
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Exam (elaborations)
ECN 221 ASU Arizona State University -ECN 221 ASU final Question and answers verified to pass 2025
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--8May 20252024/2025A+Available in bundle
- ECN 221 ASU Arizona State University -ECN 221 ASU final Question and answers verified to pass 2025 
The numerical value of the standard deviation can never be 
-larger than the variance 
-negative 
-zero 
-all of the answers are correct - correct answer negative 
 
the interquartile range is used as a measure of variability to overcome what difficulty of the range? 
-the range is influenced too much by extreme values 
-the range is difficult to compute 
-the sum of the range variances is zer...
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STUVIAMAESTRO254
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Exam (elaborations)
ecn 221 asu Arizona State University -ecn 221 asu exam 1 Question and answers already passed 2025
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--8May 20252024/2025A+Available in bundle
- ecn 221 asu exam 1 Question and answers already passed 2025 
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 ...
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STUVIAMAESTRO254
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Exam (elaborations)
ECN 221 ASU Arizona State University -ECN 221 ASU Exam 1 Review Question and answers already passed 2025
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--6May 20252024/2025A+Available in bundle
- ECN 221 ASU Arizona State University -ECN 221 ASU Exam 1 Review Question and answers already passed 2025 The five-number summary consists of what five statistical measures? - correct answer min, Q1, median, Q3, max 
 
The coefficient of variation indicates how large the standard deviation is relative to the _____. - correct answer mean 
 
Excel's _____ function can be used to compute the mean. - correct answer average 
 
The descriptive measure of dispersion that is based on the concep...
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STUVIAMAESTRO254