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Index numbers are important tools of statistical analysis They are
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action alternative approximation Assume average Brand called coin collected column computed considered Construct critical cumulative frequency curve decision defective degrees of freedom designated determine diet discussed Draw effective equal Equation error estimate event EXAMPLE EXERCISE expected experiment Figure Find five four frequency distribution given grades greater groups heads identical independent interval involved known least less limit loss Machine measure median method nature normally distributed null hypothesis observations obtained outcomes parameter period population possible presented probability problem procedure produced proportion random sample random variable randomly selected rank referred region regression reject relationship represented respectively rule sample mean selected shown shows significance simple squares standard deviation statistic Suppose Table taken test statistic Test the null true units variance weight workers yields