Your Practice Set – Applications and Interpretation for IBDP Mathematics
Part II Solution
( c ) ( 1 ) y( n) � �0.4621212121 n � 5.816017316 n �18.00757576 n �24.21428571
3 2
y n n n n
3 2
( ) � �0.462121 �5.81602 �18.0076 � 24.2143
( 2 )
2
R � 2
R �
0.9281039957 0.928
|
( 3 ) |
92.8 % of the variability of the data is explained by the regression model . |
( d ) |
( 1 ) |
7 |
|
( 2 ) |
9.57 |
|
( 3 ) |
The null hypothesis is not rejected . |
2
As � � 12.017 . calc
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