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The following marks (out of 50) obtained in Mathematics by 60 students of Class VIII: 21, 10, 30, 22, 33, 5, 37, 12, 25, 42, 15, 39, 26, 32, 18, 27, 28, 19, 29, 35, 31, 24, 36,18, 20, 38, 22, 44, 16, 24, 10, 27, 39, 28, 49, 29, 32, 23, 31, 21, 34, 22, 23, 36, 24,36, 33, 47, 48, 50, 39, 20, 7, 16, 36, 45, 47, 30, 22, 17.Using tally marks make a frequency table with intervals as 0–10, 20–30 and so on.plz answer it's urgent​

Answer»

-step explanation:NOTE: If we prepare frequency distribution table for each observation, then the table would be too long. So for our convenience, we make groups of observations like 0 – 9, 10 – 19, and so on. We OBTAIN a frequency distribution of number of observations COMING under each GROUP. In this way, we prepare a frequency distribution table for the above data as below:]groups tally marks frequency0 – 9 III 0310 – 19 IIII IIII 1020 – 29 IIII IIII IIII I 1630 – 39 IIII IIII IIII 1540 – 49 IIII I 0650 – 59 0Total 50 50In the above table, marks are grouped into 0 – 9, 10 – 19, and like. No scores overlap in any group. Each of these groups is CALLED a class interval or a class. This method of grouping data is called inclusive method.



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