Question

calculating and interpreting the mean
the stemplot shows how much money a sample of high school students makes per month.
use the stemplot to answer the questions.
the mean paycheck is $
the mean is a
this mean paycheck indicates that
student monthly paychecks
0 67 85 92
1 23 47 81 81 96 98
2 13 52 77 87
3 25
4 59

Explanation:

Step1: Identificar los valores

Los valores son: \(67\), \(85\), \(92\), \(123\), \(147\), \(181\), \(181\), \(196\), \(198\), \(213\), \(252\), \(277\), \(287\), \(325\), \(459\)

Step2: Calcular la suma

\(67 + 85+92 + 123+147+181+181+196+198+213+252+277+287+325+459 = 3383\)

Step3: Calcular el número de valores

Hay \(n = 15\) valores.

Step4: Calcular la media

La media \(\bar{x}=\frac{3383}{15}\approx225.53\)

Answer:

The mean paycheck is \(\$225.53\). The mean is a measure of central tendency. This mean paycheck indicates that, on average, a student in the sample makes approximately \(\$225.53\) per month.