Compute Karl Pearson's coefficient of skewness from the following data:
| Classes | Frequency |
| 30—33 | 2 |
| 33—36 | 4 |
| 36—39 | 26 |
| 39—42 | 47 |
| 42—45 | 15 |
| 45—48 | 6 |
Additional information:
i. Arithmetic mean is 40.11.
ii. Standard deviation is 2.96.
iii. Model class is 39-42.
b) Explain convenience and judgement sampling methods in brief.
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Calculate the Arithmetic Mean from the following data:
| Total Sales (in thousands) | Number of Salespersons |
| 0-5 | 3 |
| 5-10 | 12 |
| 10-25 | 25 |
| 25-50 | 10 |
Draw a histogram and a frequency polygon from the following data:
| Classes | f |
| 10-20 | 10 |
| 20-30 | 20 |
| 30-40 | 30 |
| 40-50 | 25 |
| 50-60 | 10 |
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Differentiate between the primary and secondary data. Explain different methods of collecting primary data and the sources of secondary data.
See Answer →निम्नलिखित लेन-देन रोजनामचे में दर्ज कीजिए।
| 2018 | रु. | |
| जनू 1 | अशोक को नकद कबक्री | 18,000 |
| जनू2 | कवनोद दे माल ख़रीदा | 10,000 |
| जनू2 | इस माल पर दलुाई (cartage) का भगुतानककया | 200 |
| जनू3 | परुानेअख़बारों की कबक्री सेप्राप | 100 |
| जनू4 | चेक द्वारा नगरपाकलका करों (municipal taxes) का भगुतानककय | 900 |
| जनू4 | मशीनरी की मरम्मत केकलए भगुतानककया | 600 |
| जनू8 | चेक द्वारा कमीशन प्राप्त ककया | 1,700 |
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