Aleast squares regression line was calculated to relate the length (cm) of newborn boys to their weight in kg. the line is weight equals negative 5.31 plus 0.1694 length. a newborn was 48 cm long and weighed 3 kg. according to the regression model, what was his residual?

0.1788

Step-by-step explanation:

The regression equation relates the length of newborn to their weight, in kg.

The equation is

Where

w is weight in kg

l is length in cm

The residual is the difference in observed value and predicted value

The observed value is 3kg . Now let's find the predicted value by plugging in 48 into the equation (in l):

Residual = 3 - 2.8212 = 0.1788

dont trust me im no expert these losers made me fail a test bro this sucks

step-by-step explanation:

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w