Roe's friends are members of frank's gym. the dot plot shows the number of days that roe's friends worked out at frank's gym last month. the most common number of days that roe's friends worked out last month is a. 21 b. 23 c. 25 d. 27 days. a. 5 b. 6 c. 23 d. 27 of roe's friends worked out fewer than than 24 days.