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Q. What is Inference? Ans. Inference is the process of deriving conclusions based on facts or premises. We often make inferences based on the results of statistical studi
There are 49 mice in a pet shop. 30 mice are white. 27 mice are male. 18 mice have short tails. 8 mice are white and have short tails. 11 mice are male and have short tails.
Calculate Correlation coefficient for X and Y, Statistics Homework • Variable X x • Variable Y y • Calculate: • z-scores for all values in the variables • correlation coefficien
Consider a multiple regression model Y=ß0+ß1X1+ß2X2+µ The sample data yields the following matrices: X’X= { ¦(33&0&0@0&40&0@0&20&60) } Y’X=¦((132&24&92)) ?(y-Y)2 =150 a. what
highlight four characteristics and four functions of statistics
What is prime cost? Primary price is the combination of a manufactured item's expenditures of immediate materials and immediate labor. In other words, prime price represent
Define Average Speed in Various Cases (a) Particles covering different distances in different times say a particle covers s1 distance in time t1 ,s2 in time t2, s3 in time t3 and
Define Mortality: The following rates are used for measuring mortality. Crude death rate The annual crude death rate is defined as Crude death rate = annual deaths / annual
Sequential Sampling: This is somewhat complex sample design where the ultimate size of the sample is not fixed in advance but is determined according to mathematical decisions on t
difference between histogram and historigram
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