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The next step is to determine the sources of data to be used. The researcher has to decide whether he has to collect primary data ror depend exclusively on secondary data. Sometimes the research study is based on both secondary and primary data.
When a study is to be based on secondary data whether partly or fully it is necessary to satisfy oneself that the data are quite suitable for the objectives spelt out by the study. It is also advisable to evaluate secondary data in detail to avoid possible sources of error. It is only when such secondary data are unavailable inadequate or unreliable that a researcher should decide on collecting fresh data.
Once the decision in favour of collection of primary data is taken one has to decide the mode of collection. The two methods available are observational methods and survey methods.
A study on the occurrence of line faults in an electricity supply network was carried out over a two-year period. Data was collected from six regions on the number of faults per y
Background: There was no 2004-05 National Hockey Leagues (NHL) season because of a labour dispute between the players and the teams. One of the outcomes of the labour dispute was
Linear regression is a regression methods that models the relationship between a dependent variable independent variables ? X1 i = 1 .........p and a random term . the mod
Lifts usually have signs indicating their maximum capacity. Consider a sign in a lift that reads “maximum capacity 1400kg or 20 persons”. Suppose that the weights of lift-users are
In order to derive meaningful results from the statistical tables the researcher may use one or more of the followings four steps: a.The first step is to calculate relevant meas
Normal Reaction: When two materials are in get in touch with, then the materials put out makes on each other. The makes are reverse to each other in route and are similar to each o
The game of "Bunco" is played with three standard dice. "Bunco" occurs when all three dice show the same number of spots. What is the probability of tossing a "Bunco" on the first
how to re-reference a series.
We start reading and display the data: library (UsingR) data(galileo) g2=galileo$init.h-500 gl=galileo$h.d par(bg='cornsilk') plot(gl,g2,pch=20,col="red",cex=2,yl
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