Download OU B.Sc 2019 Dec 3rd Sem (2nd Year) 8075 Statistics Question Paper

FirstRanker.com

Firstranker's choice

www.FirstRanker.com

--- Content provided by FirstRanker.com ---

Code No. 80TE

B.Sc Semester (CBCS) December 2018

BMHI 204

Mathematical Methods

Time: 3 Hours

--- Content provided by​ FirstRanker.com ---

PART - A (8x5 = 40 Marks)

(Short Answer Type)

Note: Answer any FIVE of the following questions.

1. What is scatter diagram? Explain regression existence using scatter diagram.
2. Explain the properties of regression coefficients.

--- Content provided by​ FirstRanker.com ---

3. Write about the types of association.
   1. Positive association
   2. Negative association
4. Define
   1. Unbiasedness
   2. Consistency

   --- Content provided by‍ FirstRanker.com ---

   Give one example for each.
5. Define sampling distribution and standard error.
6. Write about interval estimation.
7. Explain estimation by method of moments.

PART - B (4x15 = 60 Marks)

--- Content provided by⁠ FirstRanker.com ---

(Essay Type)

9. 1. Derive the normal equations for fitting of Y=ab^x.
   2. Derive the likelihood equation of Poisson distribution.
10. 1. 1. Define multiple correlation for three variables and give properties of the same.

       --- Content provided by⁠ FirstRanker.com ---

       2. If r₁₂=0.7, r₁₃=0.65, r₂₃=0.4, find R_1.23.
    2. 1. Define consistency of data. Give the conditions for consistency of three variables.
       2. Let X₁, X₂, ..., X_n be a random sample from a normal population. Find the maximum likelihood estimator.

    --- Content provided by‍ FirstRanker.com ---

11. Define Chi-square Distribution. Derive the relationship between F and Chi-square distributions.

www.FirstRanker.com