7/29/2019 Second Statistics for Economics and Business
Tutorial
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Second Statistics for Economics and Business Tutorial
Lecturer: Dewi Ratna Sjari
Tutor: Venty | [email protected]
Date: Sept, 11 2013
Khalif an otomotif analist is examining the data of MPV and
sedan automobile sales in 26 cities. Data uspresented in the table
below. You asked to help Khalif analysing the data, and answer
these questions:
a. Draw steam and leaf diagrams from the automobile sales data
of MPV and sedanb. Find the statistics 5 main central points i.e.
minimum, maximum, median, first quatile (Q1) and third
quartile (Q3), than dram a boxplot for each group of data.
c. Compute the mean and standard deviation for each car sales.d.
Check the distribution symmetrical for each group
e. Compare the two groups based on its distribution, central
tendecies, dispersion, and simetricity. What
is your conclusion?
Data of MPV and Sedan Automobiles in 26 cities
City Sales of MPV
(thousand per month)
Sales of Sedan
(thousand per month)A 10 16
B 18 16
C 18 11
D 9 17
E 22 29
F 24 23
G 22 19
H 24 30
I 4 0
J 21 19
K 28 29
L 24 31M 25 32
N 9 8
O 32 33
P 29 49
Q 11 31
R 6 19
S 10 16
T 10 31
U 13 20
V 23 31
W 18 18
X 16 34
Y 27 53
Z 9 71
