Which description best fits the adjacent scatterplot?
Moderate positive correlation
Moderate negative correlation
Strong positive correlation
Strong negative correlation
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In the following two statements, which is the appropriate answer
(i) Given the relationship: The number of cigarettes smoked and the chance of cancer. Chance of cancer is the dependent variable.
(ii) Given the relationship: The volume of petrol in a cars tank and the distance travelled. The volume of petrol is the independent variable.
Both are true
Both are false
Only (i) is true
Only (ii) is true
(i) Given the relationship: Weight of rice and price. The weight is the independent variable
(ii) Given the relationship: The number of cars sold and commission. The commission is the dependent variable.
Given the data set: \((-2,6),(-1,3),(0,4),(1,2),(2,0),(6,-3)\). Determine the correlation coefficient.
Using technology, determine the correlation coefficient for the data set:
\((90,4),(120,2),(85,14),(105,6),(88,48),(103,50),(145,25),(94,32)\)
Give the correlation coefficient \(r=-0.93\) for the data set:
\((1,5),(2,4),(3,4),(4,2),(5,3),(6,2),(7,1)\). Determine the equation of the line of best fit.
Using technology, determine the equation of the line of best fit for the data:
\((-2,-4),(-1,-3),(1,1),(3,3),(4,4),(7,8)\)
\(\text{Moderate positive correlation.}\)
