Data Analysis Worksheet
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Data Analysis Worksheet
📘 Part 1: Key Formulas & Quick Check
a) Mean = _________
b) Median = _________
c) Range = _________
d) Lower fence (using IQR) = _________
e) Upper fence (using IQR) = _________
🧮 Part 2: Calculations, Fences and Stem-and-Leaf
a) Find the mean. Show working.
b) Find the median. ________
c) State the mode. ________
d) Find the range. ________
a) Calculate Q1 and Q3. Q1 = ________ Q3 = ________
b) Find the IQR. IQR = ________
c) Calculate the lower fence and upper fence (use 1.5 × IQR): Lower fence = ________ Upper fence = ________
d) Which values (if any) are outliers? ________
Numbers: 21, 23, 24, 27, 28, 31, 33, 34, 36
Median = ________
✏️ Part 3: Compare & Explain (Writing)
Class A: 50, 55, 60, 65, 70, 75
Class B: 50, 55, 60, 65, 70, 200
a) Calculate the mean for each class. Show your answers:
Mean Class A = ________ Mean Class B = ________
About This Worksheet
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