The slope of the trend line is 15. What does that mean in regard to the data of the scatterplot? Check all that apply. The slope
represents the rate of change of the data. Advertising costs increase $15,000 as sales increase by $1,000. Sales increase $15,000 as ads increase by $1,000. A positive slope infers a negative correlation. A positive slope infers a positive correlation.'
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s'(107) means the value of derivative of s(a) at a = 107. So, first step is to find the derivative of s(a).
Taking derivative of both sides, we get:
Taking the common out from right hand side of the equation:
Applying the power rule of derivative:
Now we can substitute 107 in place of a to get s'(107):
Thus the value of s'(107) rounded to 5 decimal places is 0.35494