Expert answer:statistics

Expert answer:i need the answers for the questions in word……. ASAP thank you so much
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1. Please calculate descriptive statistics on the following quantitative numbers AND create
either a bar chart, stem and leaf plot, or frequency table (with appropriate intervals). And
determine whether or not the data represents a normal curve.
(15 points)
The following are real numbers tallying the number of votes a member of Congress has cast
during one congressional year.
Data Set: 55, 67, 25, 43, 45, 36, 80, 45, 66, 76, 43, 55, 55, 45, 45
•
Does this data represent a normal curve? YES or NO
•
Create one visual analytic – a bar chart, stem and leaf plot, or frequency table (with
appropriate intervals).
Place your answers in the correct boxes below
Mean
Median
Mode
Range
Sample
_
X
True middle
number
Most
frequently
occurring
number
Max X – Min
X
Variance
Sample
Standard
Deviation
Standard Confidence
Error
Interval at 95%
(SE)
(.05)
s2
s
S/√n
Quartiles
Q₁
Q₂
Q₃
Formulas that are not included above
X minus
Mean
=d
d²
Mean +/- (SE x2)
…
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