RUJUKAN Frederick L. Coolidge. (2006). Statistics A Gentle Introduction. United States of America: Sage Publications. Heng, K. H., Cheng, K., & Talbert, J. F. (2009). Additional Mathematics. Singapore: Pearson Education South Asia Pte Ltd. Lau Too Kya, Phang Yook Ngor & Zainudin Awang. (2009). Statistics. Shah Alam: Oxford Fajar Sdn. Bhd. Sim Kwang Yaw. (2012). Additional Mathematics. Selangor: Sasbadi Sdn. Bhd. https://healthysmsht.wordpress.com/2011/11/19/kaji-selidik-tentang-gaya-hidup-yang-sihat/ https://www.google.com/#q=kelebihan+pengambilan+vitamin\ https://www.google.com/#q=isu+statistik https://www.google.com/#q=contoh+soal+selidik+isu+berat+badan+pispm