Question

the dot plot below represents how long it takes students in a 7th grade math class to get to school every morning. commute time minutes what was the mean commute time? answer attempt 1 out of 2 minutes

Explanation:

Step1: Count data - points

5 has 3, 10 has 1, 15 has 5, 20 has 4, 25 has 3, 30 has 3, 35 has 4, 45 has 2.

Step2: Calculate sum of products

$(5\times3 + 10\times1+15\times5 + 20\times4+25\times3+30\times3+35\times4+45\times2)$ = 555.

Step3: Calculate total number of data - points

$3 + 1+5 + 4+3+3+4+2=25$.

Step4: Calculate mean

$\frac{555}{25}=22.2$.

Answer:

22.2