आठवीं कक्षा के 30 विद्यार्थियों के रक्त समूह ये हैं :
A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O
A,AB,O,A,A,O,O,AB,B,A,O,E,A,B,O
उपरोक्त सारणी की सहायता से इस कक्षा से यदृच्छया चुने गए एक विद्यार्थी का रक्त समूह AB होने की प्रायिकता ज्ञात कीजिए ।

The blood groups of 30 students are recorded as follows A,B,O,A,AB,O,A,O,B,A,OB,B,A,AB,B,A,AB,B,A,A,O,A,AB,B,A,O,B,A,B,A Prepare a frequency distribution table for the data.

The blood groups of 30 students of Class VIII are recorded as follows: A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O, A,AB,O,A,A,O,O,AB,B,A,O,B,A,B,O. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.

The blood groups of 30 students are recorded as follows: A, B, O, A, AB, O, A, O, B, A, OB, B, A, AB, B, A,AB ,B, A, A, O, A, AB, B, A, O, B, A, B, A Prepare a frequency distribution table for the data.

The blood groups of 30 students of class VIII are recorded as follows : A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O,A,AB,O,A,A,O,O,AB,B,A,O,B,A,B,O. Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group among these students ?

The blood The blood groups of 30 students of class IX are recorded as follows: A, B O, O, AB, O, A, O, B, A, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O A student is selected at random from the class from blood donation. Find the probability that the blood group of the student chosen is: A (ii) B (iii) AB (iv) O