Your company takes orders over the phone. the company's average call time is 4.6 minutes. the graph
below shows 4 calls and the difference between the call time and the company's average call time. for
these 4 calls, what is the mean difference between the call times and the company's average call time,
rounded to the nearest 0.1 minute?
x
(note: a negative difference indicates the call is shorter than the average.)
x
x
difference between call time and
company average call time
(negative values indicate calls shorter
than company average.)
4.79
+
+
+
minutes
0.68
call 4
a22

Kevin has a spinner that has 10 equal sections and 2 sections of each color—red, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.