STA301 Formulas and Definitions

STA301 Formulas All formulas from handouts

Statistics and Probability (Virtual University of Pakistan)

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STA301 Formulas All formulas from handouts

Statistics and Probability (Virtual University of Pakistan)

Scan to open on Studocu

Studocu is not sponsored or endorsed by any college or university

Average Speed:

Total Distance Travelled Average Speed Total Time Taken

Distance Time = Speed

Distance Speed = Time

Distance = Speed Time

Mode:

1)

1) 2) fm f X l h fm f fm f

Empirical Relation between Mean, Median and Mode:

Mode Median Mean

Range:

m Range X X

Mid-Range:

X Mid Range = m X

Mid Quatile Range:

Mid Range = Q Q

Coefficient of Dispersion:

Coefficient of Dispersion = m

m X X

X X

Geometric Mean:

log log X G M anti n

log log f X G M anti f

Equation of a Straight Line · Y · a · bX · Standard Error of Estimate:

yx Y a Y b XY s n

Normal Equations:

Y na b X

XY a X b X

Correlation: · X · X · Y · Y · r · X · X · Y · Y · PEARSON’S COEFFICIENT OF CORRELATION

XY X Y n r X X n Y Y n

Linear Correlation of Coefficient:

n xy x y r n x x n y y

Regression Line of Y on X:

n xy x y byx n x x

Division of Circle:

Cell Frequency

Total Frequency

Binomial Coefficient:(

n r

C

n n n r r

r n a b a b r