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The following data shows marks obtained by 40 students in a Statistics test.
75 99 72 54 25 40 65 32 69 10 85 48 52 80
63 64 35 62 51 71 67 57 95 74 56 69 61
49 45 63 39 73 53 82 76 50 66 60 55 62
Construct a grouped frequency distribution with the intervals of 10 starting from
10-19, 20-29 etc
a) Find
i) Mode
ii) Median
iii) Inter-quartile range
iv) Co-efficient of variation based on Quartile
b) Comment on the
i) Symmetry
ii) Peakedness of the distribution
define standard deviation. their purpose,uses,advantages nd disadvantages,examples ,formula for grouped and ungrouped.
what is the role of statistics in other sciences?
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A toothpaste company wants to know if its new product increases the length of time in between dentist visits for its users. The company sets a target of 180 days to determine if it
Shafts are cut to length by two machines, A and B. Each machine cuts 50 percent of all shafts in approximately the same amount of time. Machine A's shafts are all good, but Machine
Differentiate between Historigrams and Histogram
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