Data: hours gpa
13.8 1.42
18 3.7
16.7 3.21
18 4
0.7 1.11
21.9 3.69
18 4
18 3.8
19.7 3.5
16.7 3.21

Step 3: analyze your data - Now that you have represented your data graphically, it can be more easily analyzed.

a) Describe how the line of best fit and correlation coefficient can be used to determine the correlation between two variables on your graph.

b) describe the type of correlation between two variables on your graph. How do you know?

c) does the correlation between the variables imply causation? Explain.

d) how do you calculate the residuals for a scatter plot?

e) calculate the residuals for your scatterplot in step 2d.

f) Create a residual plot for your data.

g) Does your residual plot show that the linear model from the regression calculator is a good
model? Explain your reasoning.

Solve: 3x+y=6 4x-2y=18 show all work !

Submarines control how much they float or sink in the ocean by changing the volume of air and water contained in large ballast tanks. when the tanks are completely full of water, the submarine increases its overall mass and sinks down to the bottom. when the tanks are completely full of air, the submarine reduces its overall mass and floats to the surface. depending on the density of the seawater surrounding the submarine, it will pump seawater in or out of the tanks in order to achieve the same overall density as the sea water and float neutrally in the water. the volume of the submarine never changes. when the tanks are completely full of water, a submarine with a volume of 7.8\times10^3\text{ m}^37.8×10 3 m 3 7, point, 8, times, 10, start superscript, 3, end superscript, space, m, start superscript, 3, end superscript has a total mass of 8\times10^6\text{ kg}8×10 6 kg8, times, 10, start superscript, 6, end superscript, space, k, g. the density of the seawater is 10^3\text{ kg/m}^310 3 kg/m 3 10, start superscript, 3, end superscript, space, k, g, slash, m, start superscript, 3, end superscript. to make that submarine float neutrally, and neither float nor sink in the ocean, what volume of water does that submarine need to subtract from its tanks?

#7. m is the midpoint of pq, the diameter of the circle o is 13in. and rm = 4in. find pm find pq