Homework:Statistics for Business and Economics
Partone

In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of the Nominal scale

Some hotels ask their guests to rate the hotel`s services as excellent, very good, good, and poor. This is an example of ordinal scale

Income is an example of a variable that uses the ratio scale

A portion of the population selected to represent the population is called a sample
QuestionFive
Thereare seven elements in the dataset. An element is defined as an objectin a set. There are two variables in the dataset since a variable isany number or quantity that can be measured. Data can be classifiedas being quantitative or categorical. Quantitative data usesnumerical values as units of measurement. On the other hand,categorical data uses either ordinal or nominal scale of measurement.The data for seven colleges and universities is numerical hence, itis quantitative. There are seven observations in the above datasetsince there are seven observable elements in the dataset. The averageendowment is as follows:
1.7+5.9+34.6+1.4+6.6+1.4+6.6+1.9+22.5=74.6/7=10.66Billion
QuestionSix
Thealternative relative frequency will be as follows for alternatives A,B and C. A 60/120=0.5. B 24/120=0.2. C 36/120=0.3
Frequency Relative Frequency Percent relative frequency
A 60 0.5 50%
B 24 0.2 20%
C 36 0.3 30%
BarChart
Piechart
QuestionSeven
Adoctor`s staff that studied the waiting times of patients thatarrived at the office with request for emergency services observedthe following data over a one month period.
2,5, 10,12, 4, 4, 5, 17, 11, 8, 9, 8, 12, 21, 6, 8, 7, 13, 18, 3. Useclasses of 04, 59
Frequencydistribution
Class Frequency Relative frequency Cumulative frequency distribution
04 4 0.20 4
59 8 0.40 12
1014 5 0.25 17
1519 2 0.10 19
2024 1 0.05 20
20 1
QuestionEight
Usingfollowing data create a stem and leaf unit for the display
26 32 28 45 58
52 44 36 42 27
41 53 55 48 32
42 44 40 36 37
Solution
Theleaf unit=1
2  6 7 8
3  2 2 6 6 7
4 0 1 2 4 4 5 8
5  2 3 5 8
QuestionNine
Leasttime spent on meetings is 13hours and highest is 23hours
Frequencydistribution
Class Frequency Relative frequency Percent Frequency distribution
1214 3 0.12 12%
1517 6 0.24 24%
1820 8 0.32 32%
2123 8 0.32 32%
25
QuestionTen
RowPercentages
AverageSpeed19881992 19931997 19982002 20032007 20082012 Total
130139.9 16.67% 33.33% 50% 100
140149.9 25% 25% 12.5% 25% 12.5% 100
150159.9 50% 16.67% 16.67% 16.67% 100
160169.9 50% 50% 100
170179.9 100% 100
Wecan observe that highest average speeds 170179.9 and 19982002
Questioneleven
Greensare too fast
Male and Female 
Sum of Too fast 
Sum of fine 
Male 
(85%) 64 
(60.8%) 76 
Female 
(14.67%) 11 
(32.2%) 49 
Grand Total 
75 
125 

The group that shows the highest percentage greens are too fast? Males shows greens are too fast based on percentages

Males shows the highest percentage in the initial cross tabulation 28.57% 10/35

Females show the highest percentage saying the greens are too fast at 97.5% 39/40

The conclusions are not consistent. The men have higher preferences concerning the speed of greens based on the results of survey and after analysis. Inconsistencies arise due to the combination of the cross tabulations.
Questiontwelve
Scatterplots
Ascatterplot is graph that pairs data points for two quantitativevariables
Thescatterplot assists one in examining the possible relationshipsbetween any two variables.
Speed 
30 
50 
40 
55 
30 
25 
60 
25 
50 
55 
Fuel 
28 
25 
25 
23 
30 
35 
21 
35 
26 
25 