ASSIGNMENT OF BUSINESS STATISTICS

Q1. Define Statistics and write down the uses and scope of statistics.Q2. What are the graphical representations of data, explain. Q3. write down the merits and demerits of mean, median and mode.Q4. Compute the arithmetic mean for the following frequency distribution by step deviation method:C.I. 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100

f 8 30 59 70 98 60 37 23 15 5

Q5. Calculate the mean, median mode and quartiles from the following data C.I. 0-9 10-19 20-29 30-39 40-49 50-59 60-69frequency 3 8 17 35 20 12 5

Q6. Find the and median (numerical and graphical) from the following data:Marks 0-5 5-10 10-15 15-20 20-25 25-30 30-35 35-40Frequency 4 9 6 13 27 21 12 8

Q7. Find the missing frequencies if median= 27.41 and N=100.C.I. 0-10 10-20 20-30 30-40 40-50 50-60f 12 a 27 b 17 6

Q8. Find the missing frequencies if median= 45C.I. 0-10 10-20 20-30 30-40 40-50 50-60 60-70

f 30 24 a 8 b 34 17

Q9. Find mode using grouping method.X 60 65 62 63 66 61 64f 25 105 400 375 101 140 22 Q10. Find mode using formula and graphically.C.I. 0-9 10-19 20-29 30-39 40-49 50-59 60-69frequency 3 8 17 35 20 12 5

Q11. Find the and mode using grouping method from the following data.C.I. 0-10 10-20 20-30 30-40 40-50 50-60 60-70

f 332 24 22 80 32 34 17

Q12. If median and mode of the following data are 25 and 24 find the missing frequencies.C.I. 0-10 10-20 20-30 30-40 40-50frequency 14 a 27 b 15

Q13. find mode and median using graphical method.C.I. 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100

f 8 30 59 70 98 60 37 23 15 5

Q14. Draw the histogram, frequency curve, frequency polygon and ogive from the following data.C.I. 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 90-100

f 8 30 59 70 98 60 37 23 15 5

Note: using graph paper for graphical problems.