# A researcher collected bmi body mass index of 50

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Chapter 15 / Exercise 14
Essentials of Statistics for the Behavioral Sciences
Gravetter/Wallnau
Expert Verified
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 B
3.What is the level of measure for each of the following:
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Chapter 15 / Exercise 14
Essentials of Statistics for the Behavioral Sciences
Gravetter/Wallnau
Expert Verified
a)Final grades in this class _____percentile___b)Weights of newborn babies__ratio___c)Seasons of the year____nominal____d)Boiling temperatures of different liquids_interval scales4.Determine type of sampling used:a)I collected shoe sizes from my family _convenience b)1003 adults were called after their phone numbers were randomly generated by computer simple randomc)Police stopped every sixth driver for sobriety test ___systematicd)U.S.D.O.C. collected data by randomly selecting8Federal prisons and surveying every prisoner __random__
5.I collected radon samples from basements in my neighborhood and obtained the following:Radon in cPiFrequency2-526-9210-13614-1715Identify class width_________4___Identify class midpoints______3.5 7.5 11.5 15.5__Identify class boundaries____1.5 5.5 9.5 13.5____Create a histogram for these data.