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Based on the table attached, the class boundaries are as follows: 43.5, 49.5, 53.5, 59.5, 63.5, 69.5, 73.5, 79.5.
<h3 /><h3>What is the frequency distribution about?</h3>Temperature (°F) Frequency
40-44 1
45-49 3
50-54 5
55-59 11
60-64 7
65-69 7
70-74 1
A. Viewing at the frequency table, we find that the lower class limits of two consecutive classes are 40 and 44, respectively. Thus the class width is:
Class width = 44 − 40= 4
B: One can find the class midpoints by putting the average of the lower and upper class limits. So the midpoint of the first class is seen below:
= 40 - 44 = = 42. In a similar way, we find the rest.
C. The Class boundaries is known to be that which separate the classes removing the class limits. The class boundaries are as follows:
43.5, 49.5, 53.5, 59.5, 63.5, 69.5, 73.5, 79.5
Therefore, Based on the table attached, the class boundaries are as follows: 43.5, 49.5, 53.5, 59.5, 63.5, 69.5, 73.5, 79.5.
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<u>Answer:</u>
<u>X:</u> 5
<u>Y:</u> -3
<u>Slope:</u> -
Reasoning: Slope m of a line of the form Ax+By=C equals -
A=3, B=5
M= -