In the opening sequence of "Standard Deviation", Ray offers to rub Debra's feet instead of doing another chore. He takes her black socks off and throws them on the floor, under the table. The socks can be seen for a few shots, in the same spot, after Robert comes in. At one point, however, one of Debra's black socks can be seen on the couch in the middle, and in the next shot, the sock has been removed.
When Ray looks through the bills, his right sleeve is down at his wrist, then at his elbow, then his wrist again without him adjusting it.
When Ray looks through the medical bills, he holds several of them in his right hand. In the next shot, he holds them in both hands, there are fewer and they are arranged more neatly.
When Debra hands Ray the ice cream, he takes a scoop. The amount of ice cream and chocolate sauce in the scoop change between shots. Then when Debra takes the ice cream her legs are uncrossed, then crossed in the next shot.
At the start of the final scene when Debra walks into the kitchen a boom microphone is visible at the top of the screen.
At around 5 mins, 14 mins (twice), and 18 mins, the mic is visible in the top of the screen.