Posted: January 24th, 2023

Statistics Urgent

 Solve manually in same word.  

Part

Don't use plagiarized sources. Get Your Custom Essay on
Statistics Urgent
Just from $13/Page
Order Essay

I – You must solve manuall

y

using calculator

Part 1: Questions to be solved manually using calculator:

Q.

1

Following tables 1 and

2

were collected by Mr. Biden as a part of gaming business. Mr. Biden knows that covariance associated with Game 1 is given by “H”. In order to decide his strategy for next year, he wants to know correlation and covariance between Customers and Profit with reference to Game 2 in terms of H. Please help Mr. Biden to get the required information.

Table 1: Game 1

Table 2: Game 2

Customers

Profit

Customers

Profit

1

0

5

60

30

20

15

90

40

30

20

1

50

40
40

25

30

10 50

10

120

75

Q.2 Mr. Kumar is a computer operator. He is interested in determining relationship between Input and Output values generated by the computer he is working on. Use simple linear regression to help Mr.

Kumar answer few questions based on the data provided in the below table.

10

4

5

Input

Output

1

4

2

7

3

13

1

6

6

1

9

1. Develop a relationship between Input (independent variable) and output (dependent variable) using simple linear regression.

2. Predict the output values for input values 7 and 8. 3. Calculate sum of squared errors (SSE)

4. Calculate Total Sum of Squares (SST).

5. Find the r2 for the model developed in sub question 1

Q.3

Consider the following set of points:

1

1

2

15

0

1

2

x1

x2

y
9
0

1. Find the least square regression line 𝑦𝑦 = 𝑏0 + 𝑏1𝑥1 + 𝑏2𝑥2 from the given data points.

2. Find the residual corresponding to each y

3. Find the Sum of Squared Error (SSE)

4. Find the Total sum of squares (SST)

5. Estimate the value of y given (𝑥1 = 2, 𝑥2 = 3)

6. Find the 𝑟2 of the model

Q.4

Mr. King performed logistic regression for his manufacturing project. The actual observed odd ratio for his project is 3/2. However, his predicted odds ratio is 2/3. Please help Mr. King to calculate the absolute difference between observed probability and estimated/predicted probability.

Q.5

Using the information provided below, convert the problem into logistic regression framework and solve

it. Framework for logistic regression: ln(odds ratio)= 𝛽0 + 𝛽1 ∗independent variable

40

Length

Number of

Positive Cases

Number of Negative Cases

4810

47

1

39

4520

177

241

4400

1087

1183

4370

187

175

4350

397

671

3780

14

3660

39

17

1. Find the appropriate equation for the above data. (Hint: You will need to use formula from simple linear regression. But you would need to calculate your Y values based on information provided keeping logistic regression framework in mind).

2. Find estimated probability for length=5000.

3. Based on estimated probability in earlier case, how many total cases (estimate) one needs to gather if he/she wants to get 100 positive cases for length=5000.

1

1

1

Expert paper writers are just a few clicks away

Place an order in 3 easy steps. Takes less than 5 mins.

Calculate the price of your order

You will get a personal manager and a discount.
We'll send you the first draft for approval by at
Total price:
$0.00

Order your essay today and save 20% with the discount code Newyr