Assignment of UNIT -1

(SM)                                                                      Date : 27/8/2010

Assignment of Unit -1

Q1. The following data represent the weights (in kilograms) of a sample of 25 horses:

164 148 137 157 173 156 177 172 169 165
145 168 163 162 174 152 156 168 154 151
174 146 134 140 171

Use these data to answer the following questions:
a. Construct a stem-and-leaf display for the weights.

Q2. A study was carried out on the degree of job satisfaction among doctors and nurses in rural and urban areas. To describe the sample a cross-tabulation was constructed which included the sex and the residence (rural or urban) of the doctors and nurses interviewed. This was useful because in the analysis the opinions of male and female staff had to be compared separately for rural and urban areas. Construct Cross Tabulation

Q3.   These are the marks of two judges for ten entries in a cookery competition

Entry A B C D E F G H I J

Judge 1  63 84 31 47 59 72 80 93 38 86

Judge 2  51 77 36 45 60 64 72 75 43 85

Draw a scatter diagram and the line of best fit

Q4. Find the Mean , median, Mode from the  following numbers:36, 38, 33, 34, 32, 30, 34, 35.

Q5. What are the quartiles and 60th percentile for the data given here? 5,6,6,7,7,8,8,8,9,10.?

Q6. Find out the range of the data 5700 and 9000 ?

Q7.Find Q1, Q2, Q3 from the data 23 25 29  31 34 35  36 37 38  40 42.

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Q8. Find the sample variance and population variance and standard deviation , coefficient of variation   of the data  32 50 40  30 ?

Q9. Find out the z-score for the following data 93,119,101,77,110,95,90,91,102,122.

Q10. Find out the five number summary 50,57,41,54,54,38,63,48,59,46.

Q11. Find out weighted mean from 2,6,4,4,2,2 and 1200,1500,4000,2500,2340,2345.

Q12.  Find out sample variance , population variance from the data

Data Entry Frequency 100 8 150 15 200 21 250 14 300 5

Bold is frequency

Q13. Draw the histogram , ogive from the above data.

Q14. Difference between Qualitative and Quantitative.

Q15. Write all  the Formula of unit -1

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