Data Analysis: Frequency Distribution, Regression Analysis, Hypothesis Testing

Data analysis 1
Name
Tutor
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Data analysis 2
NUMBER 1
a. Frequency distribution table showing relative frequency and percent frequency
distribution
Class Frequency Relative frequency % frequency
123 - 173 9 0.18 18%
174 - 224 15 0.3 30%
225 - 275 11 0.22 22%
276 -326 5 0.1 10%
327 - 377 4 0.08 8%
378 - 428 2 0.04 4%
429 - 479 3 0.06 6%
480 - 530 1 0.02 2%
Table 1
b. Percent frequency distribution for furniture order values histogram
123 -
173 174 -
224 225 -
275 276 -
326 327 -
377 378 -
428 429 -
479 480 -
530
0%
5%
10%
15%
20%
25%
30%
35%
Histogram
Class
Percentage frequency
Figure 1
It can be observed that the distribution curve above is not normal. The curve is skewed
to the right. This indicates that the order values are not normally distributed.
c. Since the shape is skewed to the right it means that there are extreme values on
the right. Extreme values always affect the mean hence rendering it unfit for