The Journal of King Mongkut's University of Technology North Bangkok
วารสารวิชาการพระจอมเกล้าพระนครเหนือ

Kanidta Laphaphong
Faculty of Applied Statistics, National Institute of Development Administration, Thailand
Thailand

Vichit Lorchirachoonkul
Faculty of Applied Statistics, National Institute of Development Administration, Thailand
Thailand

Jirawan Jitthavech
Faculty of Applied Statistics, National Institute of Development Administration, Thailand
Thailand