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B U S I N E S S S T A T I S T I C S F I N A L
Gilda Veronica Sikaffy
BUSINESS STATISTIC FINAL TEST
Index
Price list of Amazon and Apple stocks
Calculation of the following:
Sample
Z=95%, confidence Interval
STDV
Minim
Max
Median
Mean
X
Z=99% confidence Interval
Variance
Error of margin
Normal Distribution
Yield Average
Yield Median
Amazon Monthly earning
Apple Monthly earning
CONCLUSION
In order to find Z necessary to build the confidence
interval, I had to find first a set of values that were
going to help me to find the answers. Trough the
confidence Interval I could learn that the bigger the
confidence level, the error increase because the
confidence interval becomes wider.
The monthly earning yields between Amazon and
Apple showed the monthly fluctuation of each.
the more detail that we
posses
N=15
DAY AMAZON APPLE
1 10.5 10.87
2 13.6 14.94
3 14.6 18.31
4 18 15.08
5 16 16.49
6 13 13.48
7 9.5 14.95
8 8.8 15.05
9 9 14.76
10 10 16.28
11 11.2 15.78
12 18 16.45
13 13.7 17.06
14 14.5 17.39
15 17 16.32
Answer 4
N=15
Amazon Apple
TOTAL
z=1.96
STDV = 10.33 3.17
Minim= 10.5 10.87
Max= 17 16.32
Median= 8.8 15.05
Mean= 24.675 15.547
X= 45
z=95%= 2.57
Varianza= 0.92 0.38
Error
margin= 2.71 0.83
Norm
Distribution 0.1744841 0.431500532
yield
average= 0.4643 0.389
yield
median= 1.2 0.61
YIELDS
amazon earning
monthly
Apple monthly
earnings
3.1 4.07
0.8 3.37
3.4 -3.23
2.5 1.41
-3 -3.01
-3.5 1.47
3.1 0.1
0.2 -0.29
1 1.52
1.2 -0.5
6.8 0.67
-4.3 0.61
0.8 0.33
2.5 -1.07
13 5.45
27.6 10.9
.
9
total 10.33 3.17
square foot square foot
Standard D Amazon
apple standard
Deviatio
7.24 7.89
5.37 0.98
8.13 3.57
15.13 0.0016
19.84 0.2
17 0.3
8.59 2.43
3.17 0.9
1.38 0.9
3.18 0.18
9.72 4.08
17.54 0.54
8.75 0.31
15.73 21.43
140.77 43.7116
4.21 0.67
10.33 3.17
Amazon answer 1
1.=95% confidence interval?
95%= 1.96
z=-0.475, z=+0.475
24.67=mean
24.67+0.475+(10.33/3.74)
Median:27.905
Standard deviation=10.33
positive 28, negative 28
answer 2, Apple
99%, confidenceinterval, Z?
99%=2.57,
z=-0.495, z=+0.495
mean=15.54
stave=3.17
15.54+0.495+(3.17/3.74)
0.847593583
21.34
positivo21.34,negativo21.34
AMAZON Apple
-4.3 -3.23
-3.5 -3.01
-3 -1.07
0.2 -0.5
ANSWER 3
YIELD MEDIAN
0.8 -0.29
0.8 0.1
1 0.33
1.2 0.61
2.5 0.67
2.5 1.41
3.1 1.47
3.1 1.52
3.4 3.37
6.8 4.07
13 5.45
ANSWER 4
Increasing the confidence of level increases de
error bond

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Bs final test gilda veronica sikaffy

  • 1. B U S I N E S S S T A T I S T I C S F I N A L Gilda Veronica Sikaffy
  • 2. BUSINESS STATISTIC FINAL TEST Index Price list of Amazon and Apple stocks Calculation of the following: Sample Z=95%, confidence Interval STDV Minim Max Median Mean X Z=99% confidence Interval Variance Error of margin Normal Distribution Yield Average Yield Median Amazon Monthly earning Apple Monthly earning
  • 3. CONCLUSION In order to find Z necessary to build the confidence interval, I had to find first a set of values that were going to help me to find the answers. Trough the confidence Interval I could learn that the bigger the confidence level, the error increase because the confidence interval becomes wider. The monthly earning yields between Amazon and Apple showed the monthly fluctuation of each. the more detail that we posses N=15 DAY AMAZON APPLE 1 10.5 10.87 2 13.6 14.94 3 14.6 18.31 4 18 15.08 5 16 16.49 6 13 13.48 7 9.5 14.95 8 8.8 15.05 9 9 14.76 10 10 16.28 11 11.2 15.78 12 18 16.45 13 13.7 17.06 14 14.5 17.39 15 17 16.32
  • 4. Answer 4 N=15 Amazon Apple TOTAL z=1.96 STDV = 10.33 3.17 Minim= 10.5 10.87 Max= 17 16.32 Median= 8.8 15.05 Mean= 24.675 15.547 X= 45 z=95%= 2.57 Varianza= 0.92 0.38 Error margin= 2.71 0.83 Norm Distribution 0.1744841 0.431500532 yield average= 0.4643 0.389 yield median= 1.2 0.61
  • 5. YIELDS amazon earning monthly Apple monthly earnings 3.1 4.07 0.8 3.37 3.4 -3.23 2.5 1.41 -3 -3.01 -3.5 1.47 3.1 0.1 0.2 -0.29 1 1.52 1.2 -0.5 6.8 0.67 -4.3 0.61 0.8 0.33 2.5 -1.07 13 5.45 27.6 10.9
  • 6. . 9 total 10.33 3.17 square foot square foot Standard D Amazon apple standard Deviatio 7.24 7.89 5.37 0.98 8.13 3.57 15.13 0.0016 19.84 0.2 17 0.3 8.59 2.43 3.17 0.9 1.38 0.9 3.18 0.18 9.72 4.08 17.54 0.54 8.75 0.31 15.73 21.43 140.77 43.7116 4.21 0.67 10.33 3.17
  • 7. Amazon answer 1 1.=95% confidence interval? 95%= 1.96 z=-0.475, z=+0.475 24.67=mean 24.67+0.475+(10.33/3.74) Median:27.905 Standard deviation=10.33 positive 28, negative 28 answer 2, Apple 99%, confidenceinterval, Z? 99%=2.57, z=-0.495, z=+0.495 mean=15.54 stave=3.17 15.54+0.495+(3.17/3.74) 0.847593583 21.34 positivo21.34,negativo21.34
  • 8. AMAZON Apple -4.3 -3.23 -3.5 -3.01 -3 -1.07 0.2 -0.5
  • 9. ANSWER 3 YIELD MEDIAN 0.8 -0.29 0.8 0.1 1 0.33 1.2 0.61 2.5 0.67 2.5 1.41 3.1 1.47 3.1 1.52 3.4 3.37 6.8 4.07 13 5.45
  • 10. ANSWER 4 Increasing the confidence of level increases de error bond