Summarizing the data
You start by summarizing the purchases and prices for HOPPINESS and BUD. You calculate the average purchases of HOPPINESS and BUD as well as the average PRICE.HOP and PRICE.BUD levels by using the function colMeans(). The function colMeans() calculates the means across all specified data vectors simultaneously.
แบบฝึกหัดนี้เป็นส่วนหนึ่งของหลักสูตร
Building Response Models in R
คำแนะนำการฝึกหัด
- Get the mean of the
HOPPINESSandBUDpurchases, as well as the average ofPRICE.HOPandPRICE.BUDlevels by using the functioncolMeans().
แบบฝึกหัดเชิงโต้ตอบแบบลงมือทำ
ลองทำแบบฝึกหัดนี้โดยเติมโค้ดตัวอย่างนี้ให้สมบูรณ์
# Get the mean of HOPPINESS, BUD, PRICE.HOP and PRICE.BUD
___(choice.data[c(___,___,___,___)])