In the table below, what measure of variability is being reported? Why did you come to this conclusion?

lable 4 Pretreatment, Post-treatment, and Follow-up Symptoms by Condition Measure Treatment Control Pretreatment Post-treatment Follow-up Pretreatment Post-treatment Follow-up M (SD) M (SD) M (SD) M (SD) M (SD) M (SD) Stress 28.77 (6.12) 22.98 (9.64) 21.77 (9.87) 28.04 (6.15) 23.84 (9.18) 23.57 (9.20) Anxiety 21.11 (9.26) 15.82 (10.81) 15.98 (10.46) 19.84 (9.34) 15.60 (10.17) 15.63 (10.14) Depression 25.83 (10.34) 19.90 (12.32) 19.86 (12.08) 24.31 (10.65) 20.80 (11.98) 20.71 (11.79) Note. N = 585. Stress, Anxiety, and Depression scores had a possible range of 0-42