A researcher collected bmi body mass index of 50

This preview shows page 1 - 4 out of 4 pages.

2.A researcher collected BMI (Body Mass Index) of 50 students in an Engineering school. He found the mean BMI was much smaller than the median BMI. The reason for this might be___ a. Several students had much smaller BMI scores than the other students b. Several students had much larger BMI scores than the rest c. The researcher made some measurement errors d. All the students had smaller BMI scores, compared to national average
3.What is the level of measure for each of the following:a.Final grades in this class Percentile
b.Weights of newborn babiesRatioc.Seasons of the yearNominald.Boiling temperatures of different liquidsInterval scales4.Determine type of sampling used:a.I collected shoe sizes from my familyconvenienceb.1003 adults were called after their phone numbers were randomly generated by computer simple randomc.Police stopped every sixth driver for sobriety test systemicd.U.S.D.O.C. collected data by randomly selectingFederal prisons and surveying every prisoner random5.I collected radon samples from basements in my neighborhood and obtained the following:Radon incPiFrequency2-526-9210-13614-1715Identify class width4Identify class midpoints3.5,7.5,11.5,15.5Identify class boundaries1.5,5.5,9.5,13.5Create a histogram for these data.
2-56-910-1314-170246810121416Samples

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture