can you please tell the answers in for this? also if you can email me the answers that will be much better. (..firstname.lastname@example.org)
Student Full Name: Zainab Talha
Student ID: s14008138
CRN No: 11884
Branch: Madinah Total Points
True/False ____/5 Total ____/25 STATISTICS
ASSIGNMENT 4 Good Luck STATISTICS (STAT-101)
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
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
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.
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
16 Part-II (Multiple Choice Questions)
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
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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