Starter quiz
A vet records how many of each type of pet she sees in a week. Which category of pet did the fewest people have? ______- 'hamster' ✓
How many pieces of data are represented by this bar chart?- 4
- 12
- 15
- 48
- 58 ✓
-
- The median is the central (middle) piece of data when the data are in numerical ______. It is a measure of central tendency representing the average of the values.
- 'order' ✓
- The median of these data: 1, 1, 1, 3, 5, 5, 5, 6, 6, 7, 7, 8, 8, 9 is ______.
- '5.5' ✓
- The median of these data: 8.0, 2.2, 4.5, 8.9, 3.1, 3.4, 4.6, 8.2, 5.7 is ______.
- '4.6' ✓
- A large data set has 455 values. The median is the ______th data value when the data is in order of size.
- '228' ✓
Exit quiz
- A measure of central tendency is a summary measure that attempts to describe a whole set of data with a ______ value that represents the middle or centre of its distribution.
- 'single' ✓
- An ordered data has 4751 pieces of data. The median is in the ______th position.
- '2376' ✓
An estate agent records how many bedrooms each house has on their sales list. The number of houses with 2 bedrooms or fewer is ______.- '31' ✓
A football coach records the number of goals scored in the last 45 matches. What is the median number of goals scored?- 0
- 1
- 2
- 3 ✓
- 4
-
- The median will __________ be in the middle bar on a bar chart.
- always
- sometimes ✓
- never
-
Jun records how long it takes him to get to school each day for a week. Jun's results are shown on the line graph. Jun's median journey time is ______ minutes.- '28' ✓
Worksheet
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Presentation
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Lesson Details
Key learning points
- The median can be calculated from a line graph.
- The median can be calculated from an ungrouped frequency table.
- The median can be calculated from a bar chart.
Common misconception
Pupils may choose the middle bar on the bar chart or the middle value on the x-axis as their median.
Pull off the data from the bar chart or line graph to show where the median value is.
Keywords
Data - Data are a collection of information
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