MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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What do the differences in the three tables below tell you about the representation of a distribution with categorical variables?

Household |
     Income |
   Category |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         38        0.55        0.55
          2 |      5,339       77.46       78.01
          3 |      1,489       21.60       99.61
          4 |         13        0.19       99.80
          5 |         14        0.20      100.00
------------+-----------------------------------
      Total |      6,893      100.00
 
 
 
  Cat2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      3,059       44.57       44.57
          2 |          2        0.03       44.60
          3 |      1,547       22.54       67.14
          4 |        735       10.71       77.85
          5 |      1,450       21.13       98.98
          6 |         48        0.70       99.68
          7 |         18        0.26       99.94
          9 |          1        0.01       99.96
         10 |          3        0.04      100.00
------------+-----------------------------------
      Total |      6,863      100.00
 
 
 
  Cat3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,560       22.73       22.73
          2 |         43        0.63       23.36
          3 |         69        1.01       24.36
          4 |        122        1.78       26.14
          5 |        259        3.77       29.91
          6 |        205        2.99       32.90
          7 |        196        2.86       35.76
          8 |        211        3.07       38.83
          9 |        618        9.00       47.84
         10 |        621        9.05       56.88
         11 |        414        6.03       62.92
         12 |        323        4.71       67.62
         13 |        297        4.33       71.95
         14 |        292        4.25       76.21
         15 |      1,633       23.79      100.00
------------+-----------------------------------
      Total |      6,863      100.00
 
 
Expert Solution
Check Mark
Step 1

To check the distribution of the data, we create frequency curve of histogram. 

We represents the household income category on X axis and frequency on Y axis. And create the Frequency curve. 

 

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