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Assignment using r to answer statistical problems

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Course
Stat 1510

Institution
Memorial University Of Newfoundland (MUNSU )

My assignment was based on using r to answer statistical problems about mean mode median as well as standard deviation looking for probability drawing of graphs etc

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Uploaded on September 12, 2024
Number of pages 7
Written in 2023/2024
Type Class notes
Professor(s) Yakoub
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my third stat assignment
oyakhire osose
2023-03-15

Exercise 10.12
The graph doesnt show a good comparison.Bar graph would have been preffered, even thought the height of each cone
represent the interest rate , each cone has differing width as well as the graph lacks the presence of an explanatory variable.

Exercise 10.14
we dont need other catgories as werent provided the data and should avoid making generalizations of the data

rates of students in the US from other countries

countries Rates

China 33.2%

India 17.9%

south Korea 5.0%

Saudi Arabia 4.1%

Canada 2.4%

rates <- c(33.2, 17.9,5.0,4.1,2.4,1.4)
> countries <-c ("china", "india", "southkorea", "SA", "canada","mexico")
> barplot(rates,names.arg = countries,main = "rates of students in the US from other countries")

exercise 10.28

, b. the overall pattern of the graph or trend is a longterm downward movement overtime

c. seasonal variations that were noted between 2008and 2014

years <-c(2000:2017)
count <-c(32562,28202,27229,25989,24373,24722,23739,21809,22401,18601,19486,19717,20144,19128,16539,16931,
15500,13956)
plot(data.frame(years, count), type = "l", main="line graph showing changes in time") # Equivalent

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