Length 2:30The Mean: A Fair Share
Calculate an arithmetic mean
11+ Maths · Data
A short worked example (2:28) for one 11+ maths skill: Read a table cell.
This video shows how to find a value in a table by following the correct row and column headings. Watch an 11+ maths question solved step by step.
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A table can hide one answer among dozens of numbers. The clever part? You do not need to read them all. You only need two clues... and one tiny meeting place. Can you find it before the wrong numbers distract you? Every value has an address: its row, and its column. Follow both correctly, and they cross at EXACTLY one cell. That crossing cell holds your answer. Let us make it easy to spot.
Rows run from side to side, like shelves. Their names usually sit down the left edge. If the question names Swimming, find Swimming on the left first. Then slide your finger across that row... but do not choose a number yet. Columns run from top to bottom, like tall towers. Their headings usually sit across the top. If the question also names Thursday, find Thursday at the top. Trace straight down that column until it meets the Swimming row. Here is the trap: do not swap the clues. Swimming is a row label, not a column heading. Thursday is a column heading, not a row label. Check where each name is PRINTED. Then use the cell where their two paths cross.
Try this eleven plus question. A table shows how many children attended four clubs on Monday, Wednesday and Friday. The rows are Art, Chess, Drama and Tennis. The question asks: how many children attended Drama on Wednesday? Two clues. Drama... and Wednesday. Start with the row. Find Drama down the left edge. There it is. Highlight the whole Drama row and travel across it. Now find Wednesday along the top. Trace straight down the Wednesday column. Keep both guides visible so you cannot drift into a neighbouring cell. The Drama row and Wednesday column meet at the number seventeen. So, seventeen children attended Drama on Wednesday. No adding. No counting other cells. Just read the ONE value at the intersection, then check both labels before you finish.
Remember: find the named row, find the named column, and read the cell where they meet. Check the labels, ignore the distractors, and never swap the two directions. Row... column... answer. You have got this!
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