Quiz 1

Good Essays
Quiz 1
Each question is worth 2 points. Submit through your assignment folder by 11:59 PM EDT on September 7th.
I know I don’t need to remind anyone that UMUC’s academic integrity policies. We are all adults. We know that we shortchange only ourselves if we aren’t honest. This quiz needs to be completed without help from others. The work submitted must be your own.
What is the level of measure for each of the following:
Final grades in this class ____Ratio_________________
Weights of newborn babies____Ratio_________________
Seasons of the year_____Nominal________________
Boiling temperatures of different liquids_____Interval________________
Determine type of sampling used:
I collected shoe sizes from my family_____Convenience________________
1003 adults were called after their phone numbers were randomly generated by computer ____Simple Random________________
Police stopped every sixth driver for sobriety test ____Systematic _______________
U.S.D.O.C. collected data by randomly selecting
Federal prisons and surveying every prison _____Cluster________________

I collected radon samples from basements inmy neighborhood and obtained the following:
Radon in cPiFrequency
2-5 2
6-9 2
10-13 6
14-17 15

Identify class width______4________________
Identify class midpoints3.5, 7.5, 11.5, 15.5______________________
Identify class boundaries1.5, 5.5, 9.5, 13.5, 17.5_____________________
Create a histogram for these data.

Create a scatterplot of car weights and braking distance using the data below. Based on the result, does there appear to be a relationship between weight of a car and its braking distance?
Weight (lb) 4035 3115 4115 3650 3565 4030
Braking Distance (ft) 131 136 129 127 146 146
Scatter plot:

From scatter plot it is obvious that there appears to be a weak negative relationship between weight of a car and its braking distance.
The weekly salaries for teachers of the different grades at my school are as

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