Consider the set of data points {(−2, 1),(1, 1),(4, 3)}.
(a) Find the line of regression by hand corresponding to this data. Show several steps for your calculations.
(b) Compute R^2 by hand for this model and tell what it says about how well it fits the data (use the definition presented in class). Clearly show and label each of the sums needed for this calculation.

it's d

step-by-step explanation:

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.

150.6

all i did was i multiplied 5.02 by 30