30 members entered the class after Robert. 20 members entered the class between Raheem and Ram. 10 members entered the class between Robert and Raheem. 20 members entered the class before Ram. How many students are there in the class?
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The Marks obtained ( out of 20) by 30 students of class in a test are as follows : 14,16,15,11,15,14,13,16,8,10,7,11,18,15,14,19,20,7,10,13,12,14,15,13,16,17,14,11,10,20. Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4−8 ( excluding 8 and including 4).
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In this table class intervals are such that Lower limit is included and upper limit is not included in the class.
That means In interval (4−8), 4 is included but 8 is excluded.
And for frequency we counted how many times number from the interval occurs in given data.
Class interval Frequency
4−8 2
8−12 7
12−16 13
16−20 6
20−24 2
Total 30
Answer:
31
Step-by-step explanation:
between Robert and Raheem there is 10 students
and Raheem and Ram between there is 20 students
so after Robert there is 30 students
total number of students= 30+Robert = 31 students