Find the mean and standard deviation for each type of fish for every variable.

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Business Statistic

Q-1:

a.Find the mean and standard deviation for each type of fish for every variable.

b.If you need to choose a fish on the basis of weight, which fish you choose?

c.Find mean, median, quartiles for the entire data set for each variable.

(10 Marks)

Q-2: Regress the following:

a.Taking weight as dependent variable and height as independent variable. Is variable is found to be significant?

b.Taking weight as dependent variable and width as  independent  variable.  Is  variable  is found to be significant?

c.Taking weight as dependent variable and length1, length 2 and length 3 as independent variable. Are variables is found to be significant? Which variable is not significant?

d.Taking weight as dependent  variable  and  height,  width,  length  1,  length  2  and  length  3 as independent variable.

e.On basis of adjusted R square compare the model of part a, b, c and  d. which model is  best to predict weight?

(10 Marks)

Q-3 The daily COVID 19 cases (in hundred) for Delhi for past 2 week is summarize in the following table:

Day 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Cases 28 29 33 31 37 34 36 43 41 32 34 37 39 32

a.Using the exponential smoothing method forecast the cases for 15 days, taking alpha as 0.3 and Initial forecast is the average of all data.

(5 Marks)

b.Using linear trend analysis, find the trend line  for number of COVID  19  cases  in  Delhi and forecast for next 3 days. Also compute the Mean Square Error.

(5 Marks)

Attachments:

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