|
xi[kg] |
yi [kg] |
xi-ẋ |
Yi-ȳ |
(xi-ẋ)*(Yi-ȳ) |
(xi-ẋ)2 |
(Yi-ȳ)2 |
xi*yi |
ŷi |
sŷi |
Krzywa ufności lewostronna |
Krzywa ufności prawostronna |
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10 |
20 |
-22.86 |
-17.86 |
408.16 |
522.45 |
318.88 |
200 |
42.2801715734061 |
11.2440345560386 |
13.3717587298308 |
71.1885844169814 |
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Przedział ufnosci dla współczynnika kierunkowego prostej regresji |
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20 |
25 |
-12.86 |
-12.86 |
165.31 |
165.31 |
165.31 |
500 |
40.3450965100409 |
8.60157447453495 |
18.2304485360116 |
62.4597444840703 |
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25 |
35 |
-7.86 |
-2.86 |
22.45 |
61.73 |
8.16 |
875 |
39.3775589783584 |
7.66675464852043 |
19.6663327770123 |
59.0887851797044 |
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30 |
30 |
-2.86 |
-7.86 |
22.45 |
8.16 |
61.73 |
900 |
38.4100214466758 |
7.13533057343152 |
20.0650865423833 |
56.7549563509682 |
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40 |
45 |
7.14 |
7.14 |
51.02 |
51.02 |
51.02 |
1800 |
36.4749463833106 |
7.56345753944034 |
17.0292970494095 |
55.9205957172117 |
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45 |
50 |
12.14 |
12.14 |
147.45 |
147.45 |
147.45 |
2250 |
35.507408851628 |
8.44778207331074 |
13.7881611411461 |
57.2266565621099 |
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60 |
60 |
27.14 |
22.14 |
601.02 |
736.73 |
490.31 |
3600 |
32.6047962565802 |
12.5655501626965 |
0.298766788287473 |
64.910825724873 |
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SUMA |
230 |
265 |
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1417.86 |
1692.86 |
1242.86 |
10125 |
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ŚREDNIA |
32.86 |
37.86 |
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n= |
7 |
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WSPÓŁCZYNNIK KORELACJI R |
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0.977488629 |
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Hipoteza o istotności współczynnika korelacji |
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t= |
10.3594988092796 |
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t(alfa)= |
2.571 |
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t>t(alfa) |
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sr |
15.7661481843673 |
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Odrzucamy H0 na rzecz H1 |
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H0: zmienne są nieskorelowane |
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P |
-1.17869190467734 |
< |
a |
< |
0.791676892004309 |
0.95 |
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H1: zmienne są skorelowane |
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Obszar ufności dla prostej regresji |
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METODA NAJMNIEJSZYCH KWADRATÓW |
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a= |
-0.194 |
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b= |
44.215 |
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ŷ=ax+b |
-0,194x+44,215 |
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