student id	current weighted average
165710	72
170368	98
170711	97
173395	75
177350	86
185531	90
188267	95
189864	91
190051	95
190307	97
192292	93
195332	80
195534	83
200187	69
200851	91
204961	94
206386	95
207210	97
208343	93
208443	79
210596	90
223753	90
232313	93
252059	92
average	89
standard deviation	8