Question

2. Given the following data, calculate the mean, median, mode, midrange, standard deviation, and variance.

14.35, 17.22, 18.90, 20.02, 34.43, 12.85, 18.49, 7.62, 19.93

(a) Mean | (b) Median | (c) Mode |

(d) Range | (e) Standard Deviation | (f) Variance |

Answer #1

7.62, 12.85, 14.35, 17.22, 18.49, 18.90, 19.93, 20.02, 34.43

a) Mean = (7.62 + 12.85 + 14.35 + 17.22 + 18.49 + 18.90 + 19.93 + 20.02 + 34.43)/9 = 18.201

b) Median = 18.49

c) Mode = There is no mode in the data set.

d) Range = 34.43 - 7.62 = 26.81

f) Variance = ((7.62 - 18.201)^2 + (12.85 - 18.201)^2 + (14.35 - 18.201)^2 + (17.22 - 18.201)^2 + (18.49 - 18.201)^2 + (18.90 - 18.201)^2 + (19.93 - 18.201)^2 + (20.02 - 18.201)^2 + (34.43 - 18.201)^2)/8 = 53.329

e) standard deviation = = 7.303

Find every possible statistic of your data. (Mean, median, mode,
standard deviation, variance, midrange, range, etc.) explain what
these statistics mean in the context of your data without
defining or using a formula. Is the statistic realistic of
the population? Is it skewed? How is it distributed? What level of
measurement is it?
2005 Kelly Blue Book Used Cars
Price
Mean
$21,343.14
Standard
Error
$348.61
Median
$18,025.00
Mode
$10,921.95
Standard
Deviation
$9,884.85
Sample
Variance
97710314.9
Range
$62,116.54
Minimum
$8,638.93
Maximum...

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