Minutes the Bus Came Late |-1|0|1|2|3|
Number of Days |1|2|4|2|1|
Addie's bus pickup time is 8:00. The table shows the minutes before and after 8:00 the bus arrived at the stop for the last 10 days. Negative values represent minutes before 8:00. Calculate the standard deviation for the number of minutes the bus arrived before or after 8:00. Round your answer to the nearest tenth.​