1. Classify each of the following types of data as quantitative or qualitative.
ID: 3069647 • Letter: 1
Question
1. Classify each of the following types of data as quantitative or qualitative. (1 pt each) a. The name of a chemical sample b. The mass of a chemical sample c. The color of a chemical sample 2. The following relative frequency histogram presents the weights in pounds (lb) of a sample of visitors to a health clinic. What percent of visitors to the health clinic weighed less than 150 Ib? (2 pts) Clinic Visitor Weights 0.35 T 0.30 0.25F 0.20 0.15 0.10 0 0.027 0.00 0.280 0.213 10.160 0.153 0.087 0.060 10020 120 130 140 150 10 170 180 190 200 Weight (Ib) Worldwide sales of computers have been increasing every year. The following bar graph and time-series plot bot present a picture of the increase for the years 2005-2008. Which of the two graphs presents the more accurate picture? Why? (Give support for your choice.) (4 pts) 3. 350 320 250 200 150 260 240 220 100 2005 2006Explanation / Answer
1) Quantative data:- the data wich represent the quuantity called quuantative data
Qualitive data :- data which represent the quality of the observation called the qalittive data
a. Name of chemical sample :- The name of chemical sample also represents the quuantity of the different composite present in it so it is a quantative data
b. mass of the chemical sample :- mass represent the quantity of it is a quantative data .
c.color of the chemical sample:- colour represent does not represent any numerical value so it is a qualitive data .
2)Accordin to the given histogram
the percent of the visitors of the health clinic weighed less than 150 lbs is =(0.153+0.087+0.027)*100=26.7 %
3)
here the computer sales between 2005 to 2008 is represented by bar graph and time series polt we can clearly see that the computer sales is increasing from 2005 onward which is represented by both the graphs .
in statistic the bar graph is best used for representing the changes in a data over a time period when the changes are larger
and the time series plot are best used when the changes are small
since herre the changes arre large so the bar graph will be considerd the mor appropriate one .
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