Statistics Test III DONE - Math|TestLibrary|TakeThisTestNow...

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Math | Test Library | Take This Test Now Stats Chapters 1 & 2 It means that three-tenths of the plaque is removed. It's nonsense, because plaque is a categorical variable, so percents don't make sense. It's nonsense, because removing 100 percent of the plaque already removes all of it. It means that there is 3 times as much plaque before using the rinse as there is after using it. An ad for a new mouth rinse says that it "reduces plaque on teeth by 300%". What does this mean? You measure the age (years), weight (pounds), and marital status (single, married, divorced, or widowed) of 1400 women. How many variables did you measure? 1400 one two three In January of 1997, the price of Intel common stock rose from $131 per share to $162 per share. (Intel makes the processors for the computers you have been happily using.) What percent increase is this? 19.1% 23.7% 80.9% 123.7%
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Michelle's income two years ago was $420,000. Last year her income was only $100,000. The percent change in Michelle's income was 76.2% decrease 320% decrease 31.3% decrease None of these
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