IGNOU ECO 7 SOLVED ASSIGNMENT 2025

Ques 1.

Differentiate between the primary and secondary data. Explain different methods of collecting primary data and the sources of secondary data.

Ques 2.

Calculate the Arithmetic Mean from the following data:

Draw a histogram and a frequency polygon from the following data:

Ques 3.

Compute Karl Pearson's coefficient of skewness from the following data:

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.

Ques 4.

Describe the importance of visual presentation of data.

Ques 5.

Discuss the importance of Statistics in Business.

Ques 6.

Statistical survey

Ques 7.

Application of Ratios

Ques 8.

Geometric Mean

Ques 9.

Variance

Ques 10.

प्राथमिक और द्वितीयक आंकड़ो के बीच अंतर करे। प्राथमिक और द्वितीयक आंकड़ो को एकत्र करने के विभिन्न विधियों को समझाइए । 

Ques 11.

निम्नलिखित आंकड़ों के समांतर माध्य की गणना कीजिए। 

Ques 12.

निम्नलिखित आंकड़ो से आयत- चित्र तथा आवृति बहुभुज की रचना कीजिए :

Ques 13.

निम्नलिखित आंकड़ों से कार्ल पीयर्सन का वैषम्य गुणांक ज्ञात कीजिए :

अतिरिक्त सूचनाएँ

क) समान्तर माध्य 40.11 है।

ख) मानक विचलन 2.96 है।

ग) भूयिष्क वर्ग 39-42 है।

Ques 14.

सुविधा प्रतिचयन तथा विवेक प्रतिचयन विधियों की संक्षिप्त व्याख्या कीजिए।

Ques 15.

आंकड़ो के दृश्य प्रस्तुतीकरण के महत्व का वर्णन कीजिए।

Ques 16.

व्यवसाय में सांख्यिकी के महत्व की चर्चा कीजिए।

Ques 17.

सांख्यिकी सर्वेक्षण

Ques 18.

अनुपातों का उपयोग

Ques 19.

गुणोत्तर मध्य

Ques 20.

प्रसरण

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