Question

Sackapace E R C S D F H J K tnter X N M Shitt Aln Ctri 15 What is randomizaton 2 Why do we use it 2 o What is aquasi- experimuntal clesign 11.What is a score 18. What is QASystematio variaton 1What is unsystematio variahon Pay cerent 2.How are

Answer 1

soli 11 RandomPzceflon is a method based on chance alone by which study participants are assigned to a treatment group. when we Conduct an experiment the principle of randomization provides us a protection against the effects of extraneous factors. This means that this principle indicates that the researcher should design of plan the experiment in such a way that the variation caused by extraneous factors can all be Combined under the general heading of chance: Randomination in an experiment Pos emportant because it minimines bias responses soli- _Quasi experimental designs are generally losed to establish the _caccsality Ceppeck of Independents 'variable Lon_ dependent variable) in Sittalions where researchers are not able to randomly assign the subjeets to groups for various reasons. The study unlike true experimental study lacks, atleast one of the three principles of design ( Randomization, Control When the sample sire is small and when randomination and availabiling of local control group & not possible, this design as preferred.

عناوی - A Scome in statistics describes, how far a meas wement is above or below the average for some population, in units of standard deviations- At isa dimensionless quantity, derived by substracting the population mean from an individual raw score and then deviding the difference by the population Standard deviation. In con esperimental research, the term_systemcelic variation generally denotes an inaumacy in abservations which are the result of factors which are not under statistical Control -Randomiration is used in order to minimine the risk of systematic variablow. 18 cols - Un systematic voiafon_is_the vaccitiation within group of subpects. This variability is essontially in random manner; some subrects change ind One direction, others in an opposite direction, and Some do not change at all.

- Systematic variation in an esperimental reseccech is that it is the variation between different groups in an experiment. But unsystematic variation & the difference between individuals that does not depend on such a grouping and is there are essentially random.