diff --git a/chapters/homework/homework2.ipynb b/chapters/homework/homework2.ipynb
index 33f1a25..6254eed 100644
--- a/chapters/homework/homework2.ipynb
+++ b/chapters/homework/homework2.ipynb
@@ -108,7 +108,7 @@
     "## Task 2: Visualize the trend of temperature anomaly ( 70 marks )\n",
     "### Q1: Visualize the time series and trend of historical temperature anomalies of Singapore (35 marks)\n",
     "- Calculate the annual mean temperature from the daily data. This will result in a data set of 39 values — one per year. (5 marks)\n",
-    "- Calculate the annual temperature anomalies using the first 15-year period as the baseline. (Hint: the anomalies is calculated by substracting the yearly mean temperature from the mean temperature over year 1982 to 1996.) (5 marks)\n",
+    "- Calculate the annual temperature anomalies using the first 15-year period as the baseline. (Hint: the anomalies is calculated by substracting the decadal mean temperature over year 1982 to 1991 from the yearly mean temperature.) (5 marks)\n",
     "- Make a line graph of these annual temperature anomalies and make sure that the necessary non-data elements are included. (10 marks)\n",
     "- Based on the annual temperature anomalies above, visualize the trend using a 10-year moving window. (15 marks)"
    ]