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This particular Assignment references the syllabus chosen for the subject of Computer Application, for the July 2024 - January 2025 session. The code for the assignment is BCSL-44 and it is often used by students who are enrolled in the BCA Degree.
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Question 1: The weight of 50 adults in the age group 20-30 years, measured in Kilograms, is given below. Perform the tasks given in (i) to (iv) using a spreadsheet package:
(i) Find the minimum and maximum weight using spreadsheet formula.
(ii) Divide the weight in 5 classes with class interval 10 and create the frequency distribution for these classes using Array formula .
(iii) Find the percentage of students, whose weight is in between 50 and 60 kgs.
(iv) Represent the frequency distribution with the help of a relevant graph.
Question 2: Perform the following tasks using a spreadsheet (you must either enter necessary formula that are required to calculate the value or you may use spreadsheet function for the same):
(i) Calculate the standard error, given a population of 250, sample size 50 and population standard deviation of 25.
(ii) Assume that a company manufactures rings. The rings should have a mean diameter of 2cm. A sample of 20 such rings were taken out of 1000 such rings. The sample diameter of these rings was 2.01 cm with a standard deviation of 0.01 cm. Can the company say with 95% confidence that the rings should be accepted. Make suitable assumption and justify your answer.
Question 3: A paper making company experiments with quantity of paper being produced by four of its machine. Assuming that company has four such machines and productivity of these machine is recorded on four different days in the following table.
Perform an ANOVA using any software to test (at 5% level) whether all the four machines are equally productive. Make suitable assumptions, if any
Question 4: The daily production of items of a company is given in the following table. Use spreadsheet software to find the moving averages for the length of 5.
Question 5: A company manufactures refills of pens. Five observations of refills are taken on each day. These observations were taken 6 times during a working day. Calculate the control limits for mean and range, and plot the control charts using any statistical software. Make suitable assumptions, if any
The data is given in the following table:
(Please take the suitable values of d2 , d3, d4 , A2 and other variables.)
Question 6: A company sells summer clothing. Fit a trend using any statistical software to sales data for this company. Make suitable assumptions.
Q1. The weight of 50 children in the age group 10-15 years, measured in Kilograms, is given below. Perform the tasks given in (i) to (iv) using a spreadsheet package:
(i) Find the minimum and maximum weight using spreadsheet formula.
(ii) Divide the weight in 5 classes with class interval 10 and create the frequency distribution for these classes using Array formula .
(iii) Find the percentage of students, whose weight is in between 50 and 60 kgs.
(iv) Represent the frequency distribution with the help of a relevant graph.
Q2. Perform the following tasks using a spreadsheet (you must either enter necessary formula that are required to calculate the value or you may use spreadsheet function for the same):
(i) Calculate the standard error, given a population of 250, sample size 50 and population standard deviation of 25.
(ii) Assume that a company manufactures Discs. The Discs should have a mean diameter of 2cm. A sample of 20 such Discs were taken out of 1000 such Discs The sample diameter of these Discs was 2.01 cm with a standard deviation of 0.01 cm. Can the company say with 95% confidence that the Discs should be accepted. Make suitable assumption and justify your answer.
Q3. A company sells summer clothing. Fit a trend using any statistical software to sales data for this company. Make suitable assumptions.
Q4. The daily production of items of a company is given in the following table. Use spreadsheet software to find the moving averages for the length of 5.
Q5. A company manufactures refills of pens. Five observations of refills are taken on each day. These observations were taken 6 times during a working day. Calculate the control limits for mean and range, and plot the control charts using any statistical software. Make suitable assumptions, if any.
The data is given in the following table:
(Please take the suitable values of d2 , d3, d4 , A2 and other variables.)
Q6. A cloth making company experiments with quantity of cloth being produced by four of its machine. Assuming that company has four such machines and productivity of these machine is recorded on four different days in the following table.
Perform an ANOVA using any software to test (at 5% level) whether all the four machines are equally productive. Make suitable assumptions, if any.
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