## Recently Published

##### Normal Q-Q Plot

Streamflow relationship to Dam removal.
LOC estimates are a little closer to the actual measured streamflows than the regression

##### Loess of Streambed and Dam removal Plot

Abline is forest green dashed line. This is Exercise 10.3

##### Regression of Bed Lowering Plot

Relationship between lowering of streambed and dam removal.
regression abline is displayed as forest green. The legend has the other information.

##### Linear Least squares Plot

Residuals:
Min 1Q Median 3Q Max
-1.44350 -0.49350 0.09426 0.44426 1.50413
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) -2.07064 0.38306 -5.405 0.00012 ***
Yrs -0.16698 0.02617 -6.381 2.41e-05 ***
---
Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1
Residual standard error: 0.8448 on 13 degrees of freedom
Multiple R-squared: 0.758, Adjusted R-squared: 0.7394
F-statistic: 40.72 on 1 and 13 DF, p-value: 2.414e-05

##### Theil-SEN Solid, regression is dashed Plot

Exercise 10.2 tau = 0.7333333. True Tau is NOT equal to zero.
%95 confidence level, LCL = -10 Theil slope = 10 UCL = 85

##### Theil-Sen Plot

Exercise 10.1

##### Normal Q-Q Plot 4

Drainage vs Increased streamflow.
So, variance of residuals does NOT vary with the fitted values and appear to follow a normal distribution. This model should mee the require assumptions.

##### Drainage Area and Q90 version 2 Plot

Using log transformation , to the y variable, we can observe a linear relationship. Although we now need to perform a bias correction to Q90 values. The bias correction needs to be performed to make sure no underestimation of the Observed Q90 values

##### Streamflow and Q90 values Plot

Relation between drainage area and Q90 values.

##### Non linear Plot

Relationship--Non-Linear--Totally Dissolved Solids & Uranium
Using Spearman's rank correlation I found out that there is a positive indication that High uranium concentrations tend to relate to TDS(Total Dissolved Solids). Although there is a WEAK relation given the Spearman's rho correlation coefficient (rho = 0.11).
However-----
Using Kendall's rank correlation tau
we can reject the null hypothesis that relationship between Uranium and TDS- is not significant.

##### Corbicula Interaction Plot

Plotting seas with Corbicula data corresponding to years

##### Shapiro-Wilk Normality Test

The Shapiro-Wilk Test was used for pH measurements in water. The ph
measurements were obtained by using a piezometer.

##### Hodges - Lehman difference plot

Hodges-Lehman is used as a estimation of conductance for the
Shennandoah River

##### The Sen Plot

The Median of All Possible Ratios

##### Permutation Test of Difference Between 2 Group Means

Data: downgradient and Up gradient . Tis is a two-sided alternative test
using the Wilcoxon rank sum test with continuity correction.
The vertical line represents the difference of the observed means. the rank and sum test; plus the permutation test on the means will find the difference in the two groups.

##### Boxplots of chloride concentration two rock types

Chloride concentration Grandiorite and Quartz Monozonite

##### Q_Q_ Plot chloride concentration mg/l

this plot is for comparing two different rock types

##### Log Plot Annual Peak Discharge

Logarithm Plot if Annual Peak Discharge at
Middlebury, VT

##### Quantilt Plot of Otter Creek Middlebury VT

quantile plot describing positive skewness