The following materials standards have been established for a particular product:

Standard quantity per unit of output.. 1.0 pounds

Standard price $16.60 per pound

The following data pertain to operations concerning the product for the last month:

Actual materials purchased 2,200 pounds

Actual cost of materials purchased $34,650

Actual materials used in production.. 1,900 pounds

Actual output. 2,100 units

What is the materials quantity variance for the month?