Question 1204049: The following data represents the number of repairs conducted in a month by 28 technicians working for a company that services mining equipment:
21 50 55 43 31 36 37 44 55 39 70 72
49 65 51 85 60 57 82 78 29 32 79 56
43 89 45 68
1.1 From the raw data determine the mean (average) number of repairs.
1.2 From the raw data determine the modal number of repairs.
1.3 From the raw data determine the median number of repairs.
1.4 From the raw data determine the range.
1.5 Calculate K, the number of classes required to generate a frequency table.
1.6 Calculate the class width required to generate a frequency table.
1.7 Group the data into a frequency table using 1.5 and 1.6 above as your
guidelines.
1.8 Draw an O GIVE corresponding to the table above.
Answer by mananth(16946)   (Show Source):
You can put this solution on YOUR website! The following data represents the number of repairs conducted in a month by 28 technicians working for a company that services mining equipment:
21 +50 +55 +43 +31 +36 +37 +44 +55 +39 +70 +72
+49 +65 +51 +85 +60 +57 +82 +78 +29 +32 +79 +56
+43 +89 +45 +68=1521
1.1 From the raw data determine the mean (average) number of repairs.
Total / count = 1521/28 = 54.32
1.2 From the raw data determine the modal number of repairs.
21, 29, 31, 32, 36, 37, 39, 43, 43, 44, 45, 49, 50, 51, 55, 55, 56, 57, 60, 65, 68, 70, 72, 78, 79, 82, 85, 89
43, 55
1.3 From the raw data determine the median number of repairs.
21, 29, 31, 32, 36, 37, 39, 43, 43, 44, 45, 49, 50, (51, 55), 55, 56, 57, 60, 65, 68, 70, 72, 78, 79, 82, 85, 89
(51+55)/2 =53
1.4 From the raw data determine the range.
89-21=68
1.5 Calculate K, the number of classes required to generate a frequency table.
7 classes
1.6 Calculate the class width required to generate a frequency table.
6.8
1.7 Group the data into a frequency table using 1.5 and 1.6 above as your
guidelines.
Class interval frequency
21 - 30 2
31 - 40 5
41 - 50 6
51 - 60 6
61 - 70 3
71 - 80 3
81 - 90 3
Total: 28
you can use any statistics calculator to get the solutions and draw a graph
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