In: Statistics and Probability
Q 1 A MANUFACTURING FIRM PRODUCES
LEFT AND RIGHT WIDGETS. THE LEFT WIDGET FREQUENCY DISTRIBUTION IS
SHOWN HEREIN, AS IS THE RIGHT WIDGET FREQUENCY DISTRIBITON IS ALSO
INCLUDED.
CLASSES ARE PROVIDED, FREQENCIES
ARE SHOWN , SOLVE EACH FOR THE FOLLOWING: MEAN, MEDIAN CLASS, MODAL
CLASS, POPULATION AND SAMPLE STANDARD DEVIATIONS. REVIEW YOUR NOTES
FOR MIDPOINTS AND MEDIAN AND MODAL CLASSES
LEFT WIDGET
CLASSES
FREQUENCY MIDPOINTS
50 & < 60
9
60 &< 70
11
70 & < 80
13
80 & < 90
12
90 & < 100
15
100 & < 110
13
110 & < 120
17
90
RIGHT WIDGET
CLASSES
FREQUENCY MIDPOINTS
50 & < 60
11
60 &< 70
13
70 & < 80
15
80 & < 90
19
90 & < 100
16
100 & < 110
14
110 & < 120
12
100
since there are not any sample given we can not find samle standard deviation.
Population standard deviation along with mean , mode and median for both left and right widget is given in the images below.