Aset of data points has a line of best fit of y=2.5x-1.5
what is the residual for the point (4,7)

Residual= -1.5

Step-by-step explanation:

Given : Equation of line y=2.5x-1.5

To find : the residual for the point (4,7)

By definition of a residual is generally a quantity left over at the end of a process.

Now firstly we find the value of f at x=4

f(x) =  2.5x  -1.5

f(4) =  2.5(4)  -1.5

f(4) = 10 - 1.5

f(4) = 8.5

The residual for the point (4,7) At x=4 f(x)=7

At x=4 f(x)= 8.5

residual= 7-8.5 = -1.5

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

plants store their excess carbohydrate in the form of starch so that it could be used as energy source later on. the excess carbohydrate is converted into starch in the plastid i.e. chloroplast & this process occurs in the presence of sunlight. it is an insoluble polymer of glucose which gets stored in cell organelles named as amyloplasts. in some plants, starch is also stored in roots and embryos.