YearAnnual rainfall (mm)19892,411.5019902,889.3019911,775.7019921,706.5019932,634.6019942,283.7019951,696.5019962,429.8019972,369.9019982,006.6019992,295.0020002,765.8020011,592.2020022,061.7020031,757.7020042,421.3020053,315.5020062,826.3020072,958.2020083,536.2020091,962.3020102,604.8020112,455.9020122,470.7020132,430.1020141,824.4020152,324.9020161,872.5020172,648.7020181,851.60Question 1Calculate the following (i) Mean annual rainfall(ii). Standard Deviation(iii) Coefficient of Variation(iv) Skewness(v) KurtosisExplain the meaning of the descriptive statistics values (i) to (v) 46 Question 247Determine maximum annual rainfall for 5, 10, 50, 100 and 150 returnperiod using the following plotting position methods to determinei. California P= m/N4849 ii. Weibull P= m/(N+1)50 iii. Hazen P = (m-0.5)/N51 iv. Chegodayev P = (m-0.3)/(N+0.4)52 v. Blom P= (m-3/8)(N+1/4)53 vi. Gringorten P= (m-0.44)/(N+0.12)5455 v. Compare your results.56 vi. Which method is best suited and why?vii. Plot a semi-log graph as the annual rainfall as the ordinate and57 return period (T) as abcissa (on logarithmic scale)5859606162ReadyYearly Rainfall Analysis Monthly Rainfall Analysis Sheet3Method/ReturnPeriodWeibull|CalifoniaHazenChegodayevBlomGringortenMaximum Annual Rainfall (mm) based on Plotting Position methodsAverage5yr.10yr.50yr.100yr.150yr.IIIIActivatGo to Set

Answered: Calculate the following (i) Mean…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Year	Annual rainfall (mm)
1989	2,411.50
1990	2,889.30
1991	1,775.70
1992	1,706.50
1993	2,634.60
1994	2,283.70
1995	1,696.50
1996	2,429.80
1997	2,369.90
1998	2,006.60
1999	2,295.00
2000	2,765.80
2001	1,592.20
2002	2,061.70
2003	1,757.70
2004	2,421.30
2005	3,315.50
2006	2,826.30
2007	2,958.20
2008	3,536.20
2009	1,962.30
2010	2,604.80
2011	2,455.90
2012	2,470.70
2013	2,430.10
2014	1,824.40
2015	2,324.90
2016	1,872.50
2017	2,648.70
2018	1,851.60

Question 1

Calculate the following

(i) Mean annual rainfall

(ii). Standard Deviation

(iii) Coefficient of Variation

(iv) Skewness

(v) Kurtosis

Explain the meaning of the descriptive statistics values (i) to (v)

46 Question 2
47
Determine maximum annual rainfall for 5, 10, 50, 100 and 150 return
period using the following plotting position methods to determine
i. California P= m/N
48
49 ii. Weibull P= m/(N+1)
50 iii. Hazen P = (m-0.5)/N
51 iv. Chegodayev P = (m-0.3)/(N+0.4)
52 v. Blom P= (m-3/8)(N+1/4)
53 vi. Gringorten P= (m-0.44)/(N+0.12)
54
55 v. Compare your results.
56 vi. Which method is best suited and why?
vii. Plot a semi-log graph as the annual rainfall as the ordinate and
57 return period (T) as abcissa (on logarithmic scale)
58
59
60
61
62
Ready
Yearly Rainfall Analysis Monthly Rainfall Analysis Sheet3
Method/Return
Period
Weibull
|Califonia
Hazen
Chegodayev
Blom
Gringorten
Maximum Annual Rainfall (mm) based on Plotting Position methods
Average
5yr.
10yr.
50yr.
100yr.
150yr.
IIII
Activat
Go to Set

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