IGNOU MSTL-001 Assignment Solution 2022

IGNOU MSTL-001 Solved Assignment 2022 

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IGNOU MSTL-001 Solved Assignment 2022 

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MSTL-001 Assignment Sample Solution

MSTL-001 Assignment Question Paper 

MSTL-001: Basic Statistics Lab                          Download Question Paper 

MSTL-001: Basic Statistics Lab

Note: 

1. All questions are compulsory.
2. Solve the following questions in MS Excel 2007.
3. Take the screenshots of the final output/spreadsheet.
4. Paste all screenshots in the assignment booklet with all necessary hypotheses, interpretation, etc.

Q 1) The production of semiconductors needs a lot of water to cool down the equipment and clean silicon wafers. To study the water wastage during the production of semiconductor chips, the data of the water required for past 100 days in two plants: Plant A and Plant B are given in the following table:

Answer the followings:

• Which plant has more wastage of water?

• Which plant shows greater variability in the wastage of water?

• Determine the correlation between the wastage in both plants.

• Compute suitable width of the class intervals for both plants.

• Construct the continuous frequency distribution for both plants.

2. The number of employees (in hundreds) and the revenues (in ₹ hundred crores) of 20 companies were recorded to access the relationship between the revenue generated and strength of the employees. The data are given in the following table:

Compute the Spearman’s rank correlation coefficient between the number of employees and the revenues of the companies.

3. For the data given in Question 1, compare the water wastage of both plants to get the answers of the following questions:

I ) Is there enough evidence that the average water wastage of Plant A is more than the average water wastage of Plant B at 5 % level of significance?

II ) Are the variances of the distributions of water wastage of Plants A and B equal at 5 % level of significance?

4. Suppose that a production house wants to evaluate the popularity of eight books on a particular subject. The customer service manager of the production house hires seven evaluators with varying experience in that subject to review the books. To reduce the effect of the variability from evaluator to evaluator, she uses a randomised block design, with evaluators serving as the blocks. The eight books are the groups of interest.

The seven evaluators assigned to each of the eight books in a random order. A rating scale from 0 (low) to 100 (high) is used. The following table summarises the results:

The effect of each evaluator of eight books is normally distributed with approximately equal variances.

i) Analyse the design at 5% level of significance.

ii) Is the average popularity of the eight books significantly different? If the difference between the averages popularity of the eight books is significant, do the pair-wise comparison between them.