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cruzhazeL999
03.02.2020 •
Mathematics
Which equation of the least squares regression line most closely matches the data set?
note: the variable x represents the years after 1990.
data set below
x y
1990 45
1992 51
1994 57
1996 61
1998 75
1. y=5.5x+52
2. y=2.2x+13.8
3. y=3.5x+43.8
4. y=3.5x−43.8
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Ответ:
y = 3.5 x+ 43.8
Step-by-step explanation:
Here x represents the number of years after 1990
Thus, we get the table that is used to find the equation will be,
x 0 2 4 6 8
y 45 51 57 61 75
Let the equation that shows the above data,
y = b + a x ---------(1)
By the above table,
By substituting these values in the above value of a and b,
We get b = 43.8 and a = 3.5
Substitute this value in equation (1)
we get, the equation that shows the given data is,
y = 3.5 x + 43.8
⇒ Option (3) is correct.
Ответ:
y = 3.5 x+ 43.8
Step-by-step explanation:
Verified correct with a K12 test.
Ответ:
10
Step-by-step explanation:
it takes 3/4 of a cup to make a mini loave of bread and 3/4 is about one cup so 10