Question
The data accumulated by a public safety officer who
measures the speed of all the cars that pass a given point is referred to as _______ data.Solution
Observational data is obtained by Watching, either mechanically or in person, how people behave.
In what ratio must a person mix three kinds of rice costing him Rs 1.16,Rs 1.40 and Rs 1.72 per Kg so that the mixture may be worth Rs 1.37 per Kg?
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