Chea Sovann

7 Questions 1 Answers 0 Followers

Questions related from Chea Sovann

What is the difference between Mean Absolute Error (MAE), the Mean Absolute Percentage Error (MAPE) and the Root Mean Square Error (RMSE)?

I now develop multiple linear regression model and I want to check the model accuracy. i found that it is better to use some accuracy measurement namely, Mean Absolute Error (MAE), the Mean...

06 June 2017 817 8 View

Is Chi-square test appropriate to test model accuracy of multiple linear regression?

I now develop multiple linear regression model and I want to check the model accuracy. One of my friend suggest me to use Chi-square test however i am not sure about it. First, based on one text...

23 January 2017 8,896 3 View

How to compute the standard errors of binary logistic regression's coefficients?

I first want to know how to compute the standard error of binary logistic regression's coefficient for a independent variable. In linear regression, the text books explain how to compute the...

25 October 2016 8,779 3 View

How can I reduce the number of levels for categorical variables?

I want to develop a multiple linear regression with 457 samples. Among independent variables, there is one categorical variable which consists of three level (XL1, XL2 AND XL3). The number of XL1,...

13 September 2016 4,642 3 View

What should we do when there is one of multiple dummy variable are not significant in regression?

I have worked with multiple linear regression and binary logistic model. There is one categorical variable in my model which is has three level. I create two dummy variables to represent the whole...

01 September 2016 4,093 14 View

Is there any criteria to choose reference baseline of catogorical variables?

I have worked with categorical variables and i reviewed many source related to categorical variables. However, there is no explanation how to select reference baseline. Please provide me some...

01 September 2016 9,061 6 View

How to check accuracy of multiple linear regression model?

I want to develop speed of vehicle using multiple linear regression model. For instance, I have 457 of sampling. I used 300 of sampling for model development and keep 157 sampling to check model...

26 August 2016 6,134 8 View