This Maytag range model
MGR5755QDB was off by 75-120 Deg. F.
I check the oven temperature sensor and it had proper resistance (1050 to 1100 ohms at room temp.)
To repair this range I replaced the oven control board, part #
74009217I hope you find this information helpful.
This is the Oven Temperature Sensor if you need to order one, part #
12001655 

This is the Oven Control Board if you need to order one, part #
74009217
