SOLUTION: ATTACHED IS THE CHART:https://imagizer.imageshack.com/img924/482/OjKL0M.jpg As the new manager of a small convenience​ store, you want to understand the shopping patterns of

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: ATTACHED IS THE CHART:https://imagizer.imageshack.com/img924/482/OjKL0M.jpg As the new manager of a small convenience​ store, you want to understand the shopping patterns of      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1196678: ATTACHED IS THE CHART:https://imagizer.imageshack.com/img924/482/OjKL0M.jpg
As the new manager of a small convenience​ store, you want to understand the shopping patterns of your customers. You randomly sample 20 purchases from​ yesterday's records. The amounts of those purchases​ (in dollars) are shown to the right.
Find the quartiles using technology.
Q1 and Q3
​Find the quartiles using the Tukey method.
Q1 and Q3
​c) Find the IQR using the quartiles from part b.
IQR
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

given:
40.40|5.18|32.59|47.01
37.12|34.61|63.44|51.53
57.32|81.13|47.50|11.65
21.83|42.21|38.77|32.05
76.72|72.80|46.93|65.45

Order your data set from lowest to highest values
4.61, 5.18, 11.65, 21.83, 32.05, 32.59, 37.13, 38.77, 40.40, 42.21,+46.93, 47.01, 47.50, 51.53,+57.32,+63.44, 65.45, 72.80, 76.72,+81.13

Find the median (add all and divide the sum by number of data). This is the second quartile Q2.
Q2=+%2842.21%2B46.93%29%2F2=44.57
At Q2 split the ordered data set into two halves.
4.61, 5.18, 11.65, 21.83, 32.05, 32.59, 37.13, 38.77, 40.40, 42.21
+46.93, 47.01, 47.50, 51.53,+57.32,+63.44, 65.45, 72.80, 76.72,+81.13



The lower quartile Q1 is the median of the lower half of the data.
4.61, 5.18, 11.65, 21.83, 32.05, 32.59, 37.13, 38.77, 40.40, 42.21

Q1+=+%2832.05%2B32.59%29%2F2=32.32+}

The upper quartile Q3 is the median of the upper half of the data.
+46.93, 47.01, 47.50, 51.53,+57.32,+63.44, 65.45, 72.80, 76.72,+81.13

Q3=%2857.32%2B63.44%29%2F2=60.38
Interquartile Range:
IQR+=+Q3+-+Q1
IQR+=60.38-+32.32+=28.06