Goa PSC Technical Officer Question Paper 2021 Download Free PDF
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Goa PSC Technical Officer Question Paper 2021 Download PDF
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Q1 : While testing statistical hypothesis, Type I error is committed if one concludes that
(a) there is no difference between means in the population when in fact there is a difference
(b) there is a difference between means in the population when in fact there is no difference
(c) the absence of a difference in the samples is due to chance
(d) any difference in the samples is due to chance
Q2 : If value of correlation coefficient, r is 0.9544, and its probable error is 0.0212 , then which of the following is true?
(a) Correlation is not at all significant
(b) Correlation is definitely significant
(c) Nothing can be concluded with certainty
(d) Correlation is significant if the data is drawn from a Normal population
Q3 : Which of the following expressions makes no sense?
(a) measured independent variable
(b) manipulated independent variable
(c) measured dependent variable
(d) manipulated dependent variable
Q4 : If the standard deviation of a data is 224.5 and if each value of the data is decreased by 10, then the new standard deviation is
Q5 : If the sum of 10 observations is 12 and the sum of their squares is 16.9, then the value of variance is