Show your work.
Homework for week 3
1) The sum of differences of a set of scores about the mean of those scores is always
____________
a. greater than the mean
b. zero
c. unity
d. equal to the mean
e. dependent on the shape of the distribution
2)
In Massachusetts, eight individuals experienced an unexplained episode of vitamin
D intoxication; it was thought that these unusual occurrences might be the result of
excessive intake of dairy milk. Blood levels of calcium and albumina type of protein
for each subject at the time of hospital admission are provided below.
Calculate the following statistics for
calcium
levels of people in the study.
a.
MEAN:
___3.1425________
b.
MEDIAN:
_______3.08_________
c.
RANGE:
____1.48____________
d. VARIANCE: ___0.228__________
e.
STANDARD
DEVIATION: ___.511_________
Calculate the following statistics for
albumin
levels of people in the study.
Mean: 40.375
Median: 42
Range: 10
Variance: 7.984
Standard Deviation: 2.8626
Thought exercise:
If your objective was to determine whether excessive milk
consumption was associated with the cases of vitamin D intoxication, would this be
sufficient?
If not, what additional information would you like to have?
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 '05
 Nezami
 Standard Deviation, excessive milk consumption

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