Page 30 - Math SL HB Sem 3
P. 30
.Slntegratea
probtem:
Example:
A research was done to see how the durations of staff training period wourd influence on
lheir productivity of making toys. The data is given below:
Training duration (.r)/hr 5 6 7 8 o 10 11 12 '13
Productivity (y)/units 34 44 48 42 48 51
a) Draw a scatter diagram of the given data.
b) Justify why the calculation of a regression line for these sets of data are varid.
c) Write down the equation of the regression line for y on r.
d) Predict the productivity, correct to nearest integer, of a staff that has trained for 20 hours.
state whether o[ not this is reriabre estimate aid gir" a reason to support your answer.
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