Page 143 - PracticalGuidetoProject_BasedLearning
P. 143
اﻟﺪﻟﻴﻞ اﻟﻌﻤﻠﻲ ﻟﻠﺘﻌﻠﻢ اﻟﻘﺎﺋﻢ ﻋﻠﻰ اﻟﻤﺸﺮوﻋﺎت 122
2y=ax2+bx+c
R2
R2=0
R2=1
0<R2<1
1R2
Y X
YX
X
10 8 6 4 10
9
8
7
6
5
4
3
2
1
0
20
102 74
ExcelR2