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a random sample of 30 college students is selected. each stu nt is aske…

Question

a random sample of 30 college students is selected. each stu nt is asked how much time they spent on homework during the previous week. the following times (in hours) are obtained.
17, 19, 20, 25, 20, 19, 21, 15, 16, 23, 24, 15, 25, 21, 16, 19, 20, 18, 21, 20, 24, 25, 16, 15, 18, 19, 20, 21, 15, 25
complete the frequency distribution for the data.

Explanation:

Step1: Count the frequency of each value

  • For \(15\): Count the number of \(15\)s in the data set. There are \(4\) values of \(15\).
  • For \(16\): Count the number of \(16\)s. There are \(3\) values of \(16\).
  • For \(17\): There are \(0\) values of \(17\).
  • For \(18\): There are \(2\) values of \(18\).
  • For \(19\): There are \(4\) values of \(19\).
  • For \(20\): There are \(6\) values of \(20\).
  • For \(21\): There are \(4\) values of \(21\).
  • For \(22\): There are \(0\) values of \(22\).
  • For \(23\): There are \(1\) value of \(23\).
  • For \(24\): There are \(3\) values of \(24\).
  • For \(25\): There are \(3\) values of \(25\).

Answer:

Hours StudiedFrequency
\(16\)\(3\)
\(17\)\(0\)
\(18\)\(2\)
\(19\)\(4\)
\(20\)\(6\)
\(21\)\(4\)
\(22\)\(0\)
\(23\)\(1\)
\(24\)\(3\)
\(25\)\(3\)