Question

DATE                                 TEST#         CASE#

23-Mar-20                           3672            293

24-Mar-20                          3952             343

25-Mar-20                           5035            561

26-Mar-20                           7286            1196

27-Mar-20                           7533            2069

28-Mar-20                           7641            1704

29-Mar-20                           9982            1815

30-Mar-20                           11535          1610

31-Mar-20                           15422         2704

1-Apr-20                             14396         2148

2-Apr-20                             18757         2456

3-Apr-20                             16160          2786

4-Apr-20                             19664          3013

5-Apr-20                             20065          3135

6-Apr-20                             21400          3148

7-Apr-20                             20023          3892

8-Apr-20                             24900          4117

9-Apr-20                             28578          4056

10-Apr-20                           30864          4747

11-Apr-20                           33170          5138

For the covid19 data given, conduct a regression analysis by using

any computer software and submit your computer output.

PUT ANSWERS: (As copied from your submitted computer output)

1. CORRELATION COEFFICIENT (??,?) =
2. COEFFICIENT OF DETERMINATION =
3. REGRESSION EQUATION:

Answer 1

a. CORRELATION COEFFICIENT (??,?) =0.9657

b. COEFFICIENT OF DETERMINATION =0.9325

c.

R code:

x=c(3672,3952,5035,7286,7533,7641,9982,11535,15422,14396,18757,16160,19664,20065,
21400,20023,24900,28578,30864,33170)
y=c(293,343,561,1196,2069,1704,1815,1610,2704,2148,2456,2786,3013,3135,3148,3892,
4117,4056,4747,5138)
#x=no. of TEST; y=no. of CASE
round(cor(x,y),4)#(a)
round((cor(x,y))^2,4)#(b)
m=lm(y~x)
round(m$coefficients,4)#(c)