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    NationalEasyStatistics10–12

    A sample has standard deviation sx=4s_x = 4. A new variable is defined by y=3x+2y = 3x + 2. What is sys_y?

    Uma amostra tem desvio padrão sx=4s_x = 4. Define-se uma nova variável por y=3x+2y = 3x + 2. Qual é sys_y?

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    Solution

    Step 1 of 3

    1. 1.Adding a constant shifts every value equally, so it does not change the spread.