To find the mean of the new data with 31 minutes replaced by 35 minutes, we first need to recalculate the total of all the times and then divide by the total number of races.
New total = 35 + 42 + 34 + 33 + 34 + 42 + 34 + 27 + 34 + 35 + 35 + 36 + 42 + 45 + 49 + 34 + 32 + 36
New total = 542
Number of races = 18
Mean = New total / Number of races
Mean = 542 / 18
Mean = 30.1
Therefore, the mean is 36.2 minutes. Rounding to the nearest tenth gives us 36.2 minutes.
Times in Minutes
A B C D E F G H I
Race 1 29 42 34 33 34 42 34 27 34
Race 2 31 35 36 42 45 49 34 32 36
Jacob collected the times in minutes it took runners in his run club to run a 5k. The data can be seen in the spreadsheet. He rounded the results to the nearest minute. He then created a line graph to view the data. What is the mean if you replace the 31 minutes with 35 minutes? Round to the nearest tenth.
(1 point)
Responses
36.3 minutes
36.3 minutes
36.1 minutes
36.1 minutes
36.4 minutes
36.4 minutes
36 minutes
36 minutes
1 answer