Mathematics

Question

A psychologist is interested in the social interactions of preschool children. She measures the number of verbal interactions that each child at a preschool engages in during a day. Here is the frequency distribution of the data. The cumulative frequency for the interval 46-55 is _________

1 Answer

  • Answer:

    [tex]CF = 13[/tex]

    Step-by-step explanation:

    Given

    See attachment for table

    Required

    Determine the cumulative frequency for interval 46 - 55

    To do this, we add up the frequency from the lowest interval up to interval 46 - 55.

    From the attached table, the lowest interval is 6-15.

    So, the cumulative frequency (CF) is:

    [tex]CF = 1+2+3+3+4[/tex]

    [tex]CF = 13[/tex]

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