say why the scale has magnitude and equal intervals but no absolute Zero **For p
ID: 3201911 • Letter: S
Question
say why the scale has magnitude and equal intervals but no absolute Zero **For problems 18 and 19, you must show your work for full credit. Exercises For Conceptual Understanding Indicate the scale of measurement used in the studies described below, and justify your choice. A public opinion poll was conducted of a random sample of registered voters one week before an election. The respondents were asked whether they intended to tote for (1) the Democratic candidate, (2) the Republican candidate, (3) one of the other candidates, or (4) none of the Candidates. A psychologist studied the physiological effects of crowding by housing laboratory rat in conditions that were crowded (10 rats per cage) or uncrowded (2 rats per cage). Alter two months the adrenal glands of all the animals were removed and weighed to the nearest .01 gram (the sizes of these glands indicate sensitivity to stress). A military training officer ranked each of 20 cadets on leadership, with the rank of 1 indicating the greatest leadership, Ms. Smithson, a nutritionist in an elementary school. believes that a good breakfast helps children perform better in school. She grits an examination containing 40 questions on different subjects to two classes of 30 low-income children, one of which is grim s nutritious breakfast and the other not before the testing. Mr. Bata rated the 30 children in hit pre-school dan on readiness for kindergarten by rating them on a fire-point scale. 1 for least ready and 5 for most ready. A college teacher gave an essay exam and then graded the papers by using fire letter trades A. B. C, D, F that represented equally placed categories of competence, Students were asked whether they (1) favored an increase in the student activities fee to be eligible to attend more events, favored no increase in fee to attend the current number of events, or had no opinion. Round the following to one decimal place and then to two decimal places. -4.5793 13.149 6.8884 47.000 46.0509 0.02809 28.5555 1.89504 3.6659218. Determine the numerical value of each of.thc following expressions for the data presented. sigma_i =1^(X_i -2) 2 + sigma_i =1^a X_i sigma_i =1^(x)(y) sigma_i =1 (X) (c = 4) Differentiate between sigma X_f^2 and (sigma X)^2 Given X_1 = 3. X_2 = 4 and x_3 = 6 determine values for sigma x_f^1 and (sigma_ X_)^2.Explanation / Answer
Solution:-
15)
Rounded to the first decimal place
a) -4.6
b) 13.1
c) 6.9
d) 47.0
e) 46.1
f) 0.0
g) 28.6
h) 1.9
i) 3.7
Rounded tonthe two decimal places
a) -4.58
b) 13.15
c) 6.89
d) 47.00
e) 46.05
f) 0.028
g) 28.56
h) 1.90
i) 3.67
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