hannahkharel2
18.09.2019 •
Mathematics
531 x 7 using distributive property
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Ответ:
The predicted grads for a student who studied for 105 minutes is 94.
Step-by-step explanation:
From the given figure the scatter points are (0,55), (0,65), (15,60), (15,65), (15,80),(30,55), (30,70), (30,80), (45,75), (45,80), (45,85), (60,80), (60,90), (60,95), (75,85), (75,90), (90,85), (90,95), (90,100), (120,80), (120, 95), (120,100).
The equation of best fit line is
... (1)
where, a is slope and b is initial value.
Using graphing calculator we get,
Substitute the value of a and b in equation (1).
Substitute x=105 in the above equation to find the predicted grads for a student who studied for 105 minutes.
Therefore the predicted grads for a student who studied for 105 minutes is 94.