FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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All but one of the following statements contains an error. Which statement could becorrect?
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There is a correlation of 0.54 between the position a football player plays and his weight.
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We found a correlation of r =-0.63 between gender and political party preference.
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The correlation between the distance travelled by a hiker and the time spent hiking isr = 0.9 meters per second.
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We found a high correlation between the height and age of children:r = 1.12.
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The correlation between mid-August soil moisture and the per-acre yield of tomatoes isr = 0.53.
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Explanation:
Detailed explanation-1: -A residual plot helps us determine how well a regression line fits the data. Analyzing residual plots: ➢ A curved pattern shows the overall pattern is not linear therefore the regression line is not a good model.
Detailed explanation-2: -The term “least squares” is used because it is the smallest sum of squares of errors, which is also called the “variance.” In regression analysis, dependent variables are illustrated on the vertical y-axis, while independent variables are illustrated on the horizontal x-axis.
Detailed explanation-3: -Correlation requires that there are clearly-identified explanatory and response variables.
There is 1 question to complete.