In the figure PQSO, is a trapezium in which PQ || OS, ZPOS = 135° and ZOSQ = 90° points P, Q and R lie on %3D a circle with centre O and radius 12 cm. The area of the shaded part, in cm2, is (NTSE Stage-2 /2015) 135° S R P.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.