Mathematics, 26.09.2019 08:30, amyeileen
1. the scatterplot below shows the fuel efficiency (in
miles per gallon) and weight (in pounds) of
twenty subcompact cars.
91
3000
(a) is there a clear explanatory variable and
response variable in this setting? if so, tell
which is which. if not, explain why not.
car weight
(b) does the scatterplot show a positive association, negative association, or neither? explain why this
makes sense.
(c) how would you describe the form of the relationship?
(d) which of the following is closest to the correlation between car weight and fuel efficiency for these
20 vehicles? explain.
r=-0.9
r=-0.6
r=0 r=0.4
(e) there is one "unusual point" on the graph. explain what is "unusual" about this car.
(
what effect would removing the “unusual point” have on the correlation? justify your answer.
(g) if we converted the car weights to metric tons (1 metric ton -2,205 pounds). how would the
correlation change? explain.
Answers: 1
Mathematics, 21.06.2019 17:10, naimareiad
Which of the following expressions is equal to 2x^2+8
Answers: 1
Mathematics, 21.06.2019 23:00, koryhudson8124
How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f
Answers: 1
1. the scatterplot below shows the fuel efficiency (in
miles per gallon) and weight (in pounds...
miles per gallon) and weight (in pounds...
Geography, 09.10.2019 23:30
Geography, 09.10.2019 23:30
Geography, 09.10.2019 23:30