Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_15 (ddr3_speed INTEGER, model VARCHAR)
### Question:
Name the average DDR3 speed for model e-350
### Answer:
SELECT AVG(ddr3_speed) FROM table_name_15 WHERE model = "e-350"