Reply the next issues exhibiting your
work and explaining (or analyzing) your outcomes.
1.
Describe the measures of central tendency. Below what
situation(s) ought to every one be used?
2.
Final yr, 12 workers from a pc firm retired. Their
ages at retirement are listed beneath. First, create a stem plot for the
information. Subsequent, discover the imply retirement age. Spherical to the closest yr.
55 77 64 77 69 63 62 64 85 64 56 59
three.
A retail retailer supervisor saved observe of the variety of automotive magazines
offered every week over a 10-week interval. The outcomes are proven beneath.
27 30 21 62 28 18 23 22 26 28
a.
Discover the imply, median, and mode of newspapers offered over the
10-week interval.
b.
Which measure(s) of central tendency finest signify the info?
c.
Title any outliers.
four.
Joe needs to go his statistics class with at the very least a 75%. His
prior 4 check scores are 74%, 68%, 84% and 79%. What’s the minimal rating he
wants on the ultimate examination to go the category with a 75% common?
5.
Nancy participated in a summer season studying program. The variety of
books learn by the 23 contributors are as follows:
10 9 6 2 5 three 9 1 6 three 10 four 7 6 three 5 6 2 6 5 three 7 2
Variety of books learn
Frequency
1â2
3âfour
5â6
7âeight
9â10
a.
Full the frequency desk.
b.
Discover the imply of the uncooked information.
c.
Discover the median of the uncooked
information.
6.
The chart beneath represents the variety of inches of snow for a seven-day
interval.
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
2
5
three
10
zero
four
2
a.
Discover the imply, median, and mode.
b.
Which is the very best measure of central tendency?
c.
Take away Wednesday from the calculations. How does that impression the
three measures of central tendency?
d.
Describe the impact outliers have on the measures of central
tendency.
7.
A dealership offered 15 vehicles final month. The acquisition value of the
vehicles, rounded to the closest thousand, is represented within the desk.
Buy
value
Quantity
of vehicles offered
$15,000
three
$20,000
four
$23,000
5
$25,000
2
$45,000
1
a.
Discover the imply and median of the info.
b.
Which measure finest represents the info? Use the outcomes to
assist your reply.
c.
What’s the outlier and the way does it have an effect on the info?
eight. What do the letters signify on the field
plot?
.jpg” alt=”Field plot”>
9. The check scores from a math ultimate examination are
as follows:
64 85 93 55 87 90 73 81 86 79
a.
Create a field plot utilizing the info.
b.
Label the 5 factors on the field plot and embrace numerical
solutions from half “a.”
10. Utilizing the info and outcomes from Query
9, reply the next questions.
a.
What’s the median?
b.
What’s the vary?
c.
What’s the interquartile vary?
d.
In a brief paragraph, describe the info within the field plot.
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