need help with this question, thank you so much!

The time in seconds it takes for 20 individual sewing machines to stitch a border onto a particular garment is listed below. Calculate the mean stitching time, the variance, and the standard deviation. (Round the "mean time" and "variance" to the nearest tenth and "standard deviation" to the nearest hundredth.) 60 57 6 68 66 51 72 74 6 63 69 69 54 60 61 62 58 65 73 62 71 Mean time Variance Standard deviation