208 cm.
Or
A group of 50 individuals has been surveyed on the number
of hours devoted each day to sleeping and watc

208 cm.
Or
A group of 50 individuals has been surveyed on the number
of hours devoted each day to sleeping and watching TV. The
responses are summarized in the following table :
No. of sleeping 6 7 8 9 10
hours (x)
No. of hours 4 3 32 1
of television (y)
Absolute
3 16 20 10 1
frequencies (f)
(a) Calculate the correlation coefficient.
(6) Determine the equation of the regression line of y on x.
(c) If a person sleeps eight hours, how many hours of TV
are they expected to.​