Grade 10 Maths · Statistics

Use bar, pie and line graphs

Draw and read bar graphs, pie charts and line graphs, for example a pie chart slice for 25% is 90°.

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Bar Charts and Bar Graphs ExplainedMashup Math

Drawing Pie Charts - Corbettmathscorbettmaths

Grade 8 Maths Term 3 Lesson 22 Data Handling Bar graphsMaths Lessons with Colleen

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Question WE19.2 · Siyavula Grade 8 Mathematics, 19 Represent data, Bar graphs, Worked example 19.2 · 3 marks

$Diagram for this question$

WE19.2 A spaza shop collected data about how many customers visited every month. Draw a bar graph for the data given in the table.(3)

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More past paper questions: use bar, pie and line graphs

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3. Question d · Siyavula Grade 8 Mathematics, 19 Represent data, Bar graphs, Worked example 19.1 · 2 marks
The school tuckshop staff kept a record of how many hot dogs, sandwiches, salads and burgers they sold in one day. The bar graph represents the data they collected. $Diagram for this question$
d How many more sandwiches than salads did they sell?(2)
Show the memo (2 ticks)Memo
1. ✓
  Read both valuesReading the values off the vertical axis: $35$ sandwiches and $10$ salads were sold.
  1 mark · Use bar, pie and line graphs
2. ✓
  Difference $35 - 10 = 25$ , so there were $25$ more sandwiches sold than salads.
  1 mark · Use bar, pie and line graphs
4. Question WE4 · Siyavula Grade 11 Mathematics, 11.2 Histograms, Worked example 4 · 5 marks
$Diagram for this question$
WE4 Use the following histogram to determine the events that were recorded and the relative frequency of each event. Summarise your answer in a table.(5)
Show the memo (5 ticks)Memo
1. ✓
  Events and countsThe events are shown on the $x$ -axis: not yet in school, in primary school and in high school.
  The height of each rectangle gives the count: not yet in school: $2$ ; in primary school: $5$ ; in high school: $9$ .
  1 mark · Use bar, pie and line graphs
2. ✓
  Total frequency $2 + 5 + 9 = 16$
  1 mark · Read and complete a frequency table
3. ✓
  Relative frequency: not yet in school $\frac{2}{16} = \frac{1}{8}$
  1 mark · Use relative frequency
4. ✓
  Relative frequency: in primary school $\frac{5}{16}$
  1 mark · Use relative frequency
5. ✓
  Relative frequency: in high school $\frac{9}{16}$
  Summary: not yet in school: count $2$ , relative frequency $\frac{1}{8}$ ; in primary school: count $5$ , relative frequency $\frac{5}{16}$ ; in high school: count $9$ , relative frequency $\frac{9}{16}$ .
  1 mark · Use relative frequency

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