M
Michaella
Guest
1) A naturalist studying frogs takes a sample of body lengths and records them in millimeters to the nearest 5mm
140 135 155 145 160 150 150 155 135 140
a) Substract a shift value a to make all the data values as small as possible but keep positive
b) Divide by scale factor of b to bring all data to single figures
c) Writing xi for the original data and yi for the modified data write an equation connecting xi,yi,a and b.
d) Find the mean y and the st.dev sy.
e) Use equation from c to find mean x.
Write down the standard deviation of the original data (know that st. dev. is affected by scaling not by shifting)
:???:
140 135 155 145 160 150 150 155 135 140
a) Substract a shift value a to make all the data values as small as possible but keep positive
b) Divide by scale factor of b to bring all data to single figures
c) Writing xi for the original data and yi for the modified data write an equation connecting xi,yi,a and b.
d) Find the mean y and the st.dev sy.
e) Use equation from c to find mean x.
Write down the standard deviation of the original data (know that st. dev. is affected by scaling not by shifting)
:???:
