what will be the bill for newspapers purchased from Teacher's day to children's day if the price of the newspaper is rupees 4
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Answer:
Step-by-step explanation:
1. 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 student?
Sol. 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. From the above table, we have: The most common blood group is O. The rarest blood group is AB.
2. The distance (in km) of 40 engineers from their residence to their place of work were found as follows: Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 0 – 5 (5 not included). What main features do you observe from this tabular representation?
Sol. The given distance (in km) are: Here, the observation with minimum and maximum value are 2 and 32 respectively. ∵ The first class interval is 0 – 5, ∴ The classes are: 0 – 5, 5 – 10, 10 – 15, 15 – 20, 20 – 25, 25 – 30, 30 – 35.