When I first read the article, I thought maybe the colour could have an impact on the buyer or maybe you wanted the one that your friends bought but after learning about influential factors, I now think that it was biased because there are only two colours, blue and yellow. Also, another factor is privacy because maybe not everyone contributed to the survey since they know that it wasn’t going to be private and their answers will be shared with the student council. In the future, when reading and interpreting survey data I will take each influencing factor into account to make sure that the information I’m reading is reliable.