Question

C. Activity 3: The following are number of shells collected by Grade 7 students during their Science Class beach trip. 26 28 23 25 22 21 18 20 21 20 26 27 23 24 21 21 18 20 21 20 24 28 23 26 22 20 18 23 20 Construct a Frequency Distribution Table​

Answer 1

•If the data in both statements I and II together are necessary to answer the question.

•From Statement I,

Number of students in class = 21 or 22 or 23 or 24 or 25 or 26

•From Statement II,

Number of students in class = 25 or 26 or 27 or 28 or 29 or 30

•Since, number of students can be divided into groups of 5 students, therefore number of students must be a multiple of 5.

=Number of students in the class = 25 or 30

=On combining Statements I and II,

=Number of students in the class = 25

=Hence, the data in both the Statements I and II together are necessary to answer the question.