MVME162-213 Electrical and mechanical equipment card module
Technical data of product parameters
Control of confounders
A confounding variable (or confounder) is a variable that completely or partially accounts for the
apparent association between an outcome and a predictor variable. Specifically, a confounder is a
variable that is a significant predictor for the outcome under study, and is associated with, but not a
consequence of, the predictor variable in question (Collett, 2003). For example, traffic volume is aMVME162-213
significant predictor of crash frequency and may also be associated with several roadway characteristics
such as lane width and shoulder width (i.e., roadways with higher traffic volumes are often designed to
higher standards). If the safety effects of a specific design characteristic (e.g. lane or shoulder width) areMVME162-213
in question, then the effects of traffic volume must be separated before the true effects of the variable
of interest may be known (Persaud et al., 1999 and Hauer et al., 2004). This holds for many variables and
emphasizes the importance of controlling for potential confounding effects when estimating the effects
of the variable of interest. Reasons for confounding include lack of available data and variables that are
not practical to measure or cannot be measured.
Unobserved heterogeneity and omitted variable bias
Heterogeneity refers to the differences across observations. Unobserved heterogeneity refers toMVME162-213
differences among observations that are not accounted for in the analysis. Unobserved heterogeneity is
referred to as omitted variable bias when the unobserved characteristics are correlated with a variable
that is included in a model (Lord and Mannering, 2010; Elvik, 2011a). For example, if the intent is toMVME162-213
estimate the safety effects of chevrons on horizontal curves and the curves with chevrons also have the .
Product picture display
I guess you want to know
What if there is a quality problem?
Seven-day acceptance period, one-year warranty period
When can we deliver it?1-3 working days
How about the quality?New or second-hand
How to get the quotation?Phone, WeChat, email and whatApp can all be used
Email: onewwww@foxmail.com
About us service idea:
The company takes production suspension control system parts and components as its dominant products
As long as it is what you want, I can help you find it! Good price! Our purpose:
Build customer relationship with sincerity
Obtain customer satisfaction through service
Win the trust of customers with products
Improve work efficiency with actions
Please contact us for the products you need urgently
You can’t find the product. Please contact us
Products you can’t buy. Please contact us
reminder
For more products, please contact the email for inquiry onewwww@foxmail.com
This article from the temporal Ming sheng automation equipment co., LTD.,
link: http:www.onewwww.com
Reviews
There are no reviews yet.