## (solution) can you please tell the answers in for this? also if you can

can you please tell the answers in for this? also if you can email me the answers that will be much better. (..4@gmail.com)

Student Full Name: Zainab Talha

Student ID: s14008138

CRN No: 11884

True/False ____/5 Total ____/25 STATISTICS

MCQ

____/5

(STAT-101)

____/15

ASSIGNMENT 4 Good Luck STATISTICS (STAT-101)

Marks- 25

Answer all the Questions on the same question paper. Section-I

State whether the following statements are true or false. (5 marks, 1 Mark

Each) 1. If x and y have a strong positive linear correlation, r is close to 1. (True)

2. A perfect correlation of ± 1 occurs only when the data points all lie near to a

straight line. (False)

3. If r = 0.9, then r 2 = 0.81, which means that 19% of the total variation in y remains

unexplained. (True)

4. The values of F- distribution can be 0 or negative. (False)

5. The null hypothesis for one- way ANOVA is that three or more population means are

not equal. (False) Section-II

(Multiple Choice Questions) (5 marks, 1 Mark Each) 1. One-way analysis of variance (ANOVA) is used with data categorized with

A. more than three treatments

B. One treatment

C. Two treatments

D. Three treatments. 2. The variance within samples (S2p) for the variances 4, 2, and 6 is equal to

A. 4

B. 5

C. 6

D. 7

3 The variance between samples is an estimate of the common population

variance s 2 that is based on

A) The variability among the sample means.

B) The sample variances.

C) F-distribution

Page 2 of 4 D) The variance within samples 4. The procedures for testing hypotheses with contingency tables with two rows and two

columns (2 2) have the requirement that every cell must have an expected frequency of A. less than 5

B. more than 5

C. at least 5

D. at most 5

6.Find the test statistics 2 by McNemar?s test in the categorical data: a=25, b=15, c=20,d=10

A)

B)

C)

D) 0.9

0.457

12.5

16 Part-II (Multiple Choice Questions)

MCQ

1

2

3

4

s (5 marks, 1 Mark Each)

5 Section ?III

Answer the following Essay Type Questions (15 marks, 5 Mark Each 1. Find the value of the liner correlation coefficient r, and then find the

regression equation of the following table. Page 3 of 4 x 5 10 4 6 9 y 64 86 69 86 88 2. A company manager wishes to test a union leader?s claim that absences

occur on the different week days with the same frequencies. Test this

claim at = 0.05, where the following data have been compiled Day

Absents Sun

37 Mon

15 Tue

12 Wed

23 Thru

43 3) Evaluate the F test statistic for the following data, where n=4 for each sample Group 1 Group 2 Group 3 Group 4 Sample Mean 6.6 3.4 3.0 1.2 Sample Variance 5.35 1.35 2.5 2.65 . Page 4 of 4

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