1. Please call at 123-4567.

Question

2. Please call 123-4567.
3. Please call me at 123-4567.

(Which expressions are right?)

Answer 1

2 and 3 are right.

Answer 2

Bot, Please answer this question

Find the mean absolute deviation (MAD) of the data

98 132 295 68 176 89 287 198 94 68 240 94 369 94 155