by replicating treatments
Percent error.
Random errors can be parallax and from changes in the environment.
Experimental errors occur when the performer of experiment make a mistake. now Performer may be a human or it can be a machine or any apparatus and mistake may be of intentional, Conventional or mistake by mistake.
independent analysis blank determinations variation in sample size
levelling
basically two types of levelling.. 1.Direct Levelling 2.Indirect Levelling. further they can be classified as well.
there are commonly five tpes of levelling:- 1.simple levelling 2.differential 3.reciprocal levelling 4.profile levelling 5.cross section levelling
Levelling the Land was created in 1991-09.
thue advantages and dis advantages of levelling
differentiated by the set of instrument, observation methods and accuracy.
of Level
Ordinary spirit levelling uses a spirit level to measure height differences between points, whereas precise levelling involves more precise instruments like a digital level or automatic level to achieve higher accuracy in measurements. Precise levelling is typically used for engineering and construction projects that require more accurate measurements.
to levelling the soil.
to levelling the soil.
Levelling is used in construction to ensure that surfaces are flat and even. It is also used in surveying to determine the elevation differences between points on the ground. Additionally, levelling is used in landscaping to create terraces or level ground for various purposes.
ploughing levelling manuring