Question

The data in the table is the number of absences for students and their corresponding grade. ces 1 3.7 1 3.1 2 2.2 5 2.1 6 2 7 1.7 8 1.7 Grade Table Copy Data Step 1 of 5: Calculate the sum of squared errors (SSE). Use the values bo three decimal places 3.3167 and b = -0.2239 for the calculations. Round your answer to Answer How to Enter 2 Points Tables Keypad Lewis Learning

Answer 1

S. No (x-x* (v-v (х-ЖУу-) х 10.7959 3.7 1.8033 -4.4122 -2.4408 3.1 10.7959 0.5518 2.2 5.2245 0.0247 0.3592 -0. 1837 4 2.1 0.5102 0.0661 2.9388 0.1276 -0.6122 1.7 7.3673 0.4318 -1.7837 8. 1.7 13.7959 0.4318 -2.4408 Total Mean 30 16.5 51.4286 3.4371 -11.5143 2.357 4.286 SSX SSY SXY oleilo

1)

SSE =                   'Σ(Yi-Ŷ)2                 =

0.859

2)

error Variance

s2 =SSE/(n-2)=

0.172

3)

estimated variance of slope =se(β1) =s2/Sxx=

0.003

4)

for 99 % CI value of t=			4.0320
margin of error E=t*std error                            =			0.233
lower bound=estimated slope-margin of error =			-0.457
Upper bound=estimated slope+margin of error=			0.009

5)

for 90 % CI value of t=			2.0150
margin of error E=t*std error                            =			0.116
lower bound=estimated slope-margin of error =			-0.340
Upper bound=estimated slope+margin of error=			-0.107