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Mathematics 7 Online
OpenStudy (oleg3321):

please help medals will be rewarded

OpenStudy (oleg3321):

Part A: What is the most likely value of the correlation coefficient of the data in the table? Based on the correlation coefficient, describe the relationship between time and distance traveled by the toy car. (4 points) [Choose the value of correlation coefficient from 1, 0.99, 0.5, 0.02] Part B: What is the value of the slope of the graph of distance versus time between 10 minutes and 30 minutes and what does the slope represent? (3 points) Part C: Does the data in the table represent correlation or causation? Explain your answer. (3 points)

OpenStudy (anonymous):

@driftracer305 please help when you are online again

OpenStudy (oleg3321):

OpenStudy (oleg3321):

please help with all three parts

OpenStudy (campbell_st):

can you see any connection between the time taken and the distance travelled...?

OpenStudy (oleg3321):

can you please just solve the answer showing steps please. i get it like that a lot better

OpenStudy (campbell_st):

ok whats the avg speed in miles per minute... for each time period 4/10 = 0.4 miles/min next 8/20 = 0.4 miles/min is it the same for the last 2...?

OpenStudy (oleg3321):

idk what do you mean,

OpenStudy (campbell_st):

ok... so in the table take the distance, in miles... and divide it by the time, in minutes... you will have a value which represents miles/minute are the values the same for all 4 ... so as the time increases and the distance increases, is the rate of increase constant? if they are then the correlation coefficient is 1... if not....make an adjustment to the coefficient

OpenStudy (campbell_st):

for part B you need to find the slope using (30, 12) and (10, 4) so its (change in y)/(change in x) = (12 - 4)/(30 - 10) = get a number answer which will be miles per minute

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