Posted by:
barryman from Harvard
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- Posted on Jul. 04, 2008 at 12:26:37AM
A:
Preview: ... , the following results were obtained.
Mean = 78 Midrange = 72 Third quartile = 94 Mode = 84
Median = 80 Standard deviation = 11 Range = 52 First quartile = 68
a. What score was earned by more students than any other score? Why? 84 (this is the definition of mode)
b. What was the highest score earned on the exam? 98
c. What was the lowest score earned on the exam? 46
d. How many students scored within three standard deviations of the mean ? 50 (all of them)
4. Answer the following:
a. What does it mean to say that x = 152 has a standard score of +1.5? 152 is 1.5 standard deviations above the mean
b. What does it mean to say that a particular value of x has a z-score of -2. ...
The full tutorial is about 567 words long .
Posted by:
sudipta from IIM Bangalore
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- Posted on Jul. 04, 2008 at 06:56:51AM
A:
Preview: ... attache ...
The full tutorial is about 6 words long plus attachments.
Attachments:
wk2homework.doc (95K) (Preview)
Posted by:
prabhjyot from Nagpur university
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- Posted on Jul 09, 2008 at 1:56:24PM
A:
Preview: ... ble and freshman college grade average dependent variable.
d). Rainfall –independent variable and crop yield is dependent variable.
2. 0,32,37,50,59,66,66,67,69,75,81,88,90,92,92,98
The range is just the difference between the largest and smallest of the given values.
So the range = 98 -0 =98
3.a) The score that was earned by more students than any other score is the mode or 84 because it is the most reoccurring number in a set of data.
b) Let x ...
The full tutorial is about 507 words long plus attachments.
Attachments:
wk2homework solution.doc (95K) (Preview)
