What percent of students take exactly two courses?

I need help with STAT 200 Homework

  1. Lane et al,pg 64 #18.

What is the dependent variable?

On what scale (nominal, ordinal, interval, ratio) was it measured?

 

  1. Illowsky et al,pg 56; #80.
  2. Fill in the blanks in Table 1.33.
# of Courses Frequency Relative Frequency Cumulative Relative Frequency
1
2
3
  1. What percent of students take exactly two courses?

 

  1. What percent of students take one or two courses?

 

  1. Illowsky et al,pg 57; #84.
  2. What is the frequency for CEO ages between 54 and 65?

 

  1. What percentage of CEOs are 65 years or older?

 

  1. What is the relative frequency of ages under 50?

 

  1. What is the cumulative relative frequency for CEOs younger than 55?

 

  1. Which graph shows the relative frequency and which shows the cumulative relative frequency?

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