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statistics

Answered Same Day Dec 22, 2021

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Robert answered on Dec 22 2021

117 Votes

(the “E” is Greek letter sigma (summation)
For the following scores find the values of each expression:
X
4
2
1
5
a. Σ X = 12
. ΣX2 = 46
c. (ΣX)2 = 144
d. Σ(X - 1) = 8
For the following sets of scores find the values of each expression:
X
-4
-2
0
-1
-1
a. Σ X = -8
. ΣX2 = 22
c. Σ(X +4) = 12
Judge and Cable (2020) found that thin women had higher incomes than heavier women.
Is this an example of an experimental or non-experimental study?
As the researcher are you manipulating or simply observing?
Here we are not applying anything to the sample to change the observations. Thus it
is not an experimental study and as a researcher we are simply observing the scores
obtained.
http:
moodle.nsula.edu/mod/quiz/attempt.php?q=30902&page=0
Construct a frequency distribution table for the following set of scores. Include columns for
proportion and percentage in your table.
Scores:
5, 7, 8, 4, 7, 9, 6, 6, 5, 3, 9, 6, 4, 7, 7, 8, 6, 7, 8, 5
Your table should have the following headers:

What is the frequency (f) for X = 7?
Ans: 5
What is the frequency (f) for X = 3?
Ans:1
What is the proportion (p) of scores at X = 6?
Ans:0.2
What is...

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