The daily wages of 50 workers in a factory are given below: | Daily wages (₹) | 500–520 | 520–540 | 540–560 | 560–580 | 580–600 | | Number of workers | 12 | 14 | 8 | 6 | 10 |

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CASE_STUDIESMean of Grouped Data Using Direct MethodMedian Class in Grouped Frequency DistributionEmpirical Relationship Between Mean, Median, and ModeModal Class in Grouped Frequency Distribution3 sub-questions

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For some data x₁, x₂, ...... xₙ with respective frequencies f₁, f₂, ..... fₙ, the value of Σfᵢ(xᵢ − x̄) from i=1 to n is equal to :

MCQ (Single)Mean of Grouped Data Using Direct Method

BINGO is game of chance. The host has 75 balls numbered 1 through 75. Each player has a BINGO card with some numbers written on it. The participant cancels the number on the card when number written on the ball selected at random. Whosoever cancels all the numbers on his/her card, says BINGO and wins the game. The table given below, shows the data of one such game where 48 balls were used before Tara said 'BINGO'.

CASE_STUDIESMode of Grouped Data