Grade 6 Maths: Data Handling and Graphs

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What is data handling in mathematics?
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Data handling involves collecting, organizing, and interpreting data to make sense of it and draw conclusions.
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Name two types of graphs commonly used to represent data.
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Bar graphs and line graphs.
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What is a bar graph?
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A bar graph is a chart that represents data using rectangular bars with lengths proportional to the values they represent.
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What is the purpose of a line graph?
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A line graph shows how data changes over time by connecting data points with a line.
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How does a pictograph differ from a bar graph?
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A pictograph uses pictures or symbols to represent data, while a bar graph uses bars.
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What is an axis on a graph?
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An axis is a reference line on a graph: the horizontal line is the x-axis and the vertical line is the y-axis.
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What type of data is best represented by a bar graph?
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Categorical data, where the data can be divided into different categories.
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How can you interpret data from a line graph?
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By observing trends, such as increases or decreases, and comparing data points over time.
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What is a frequency table?
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A frequency table organizes data to show how often each value occurs.
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What are the parts of a bar graph?
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Title, axes (x-axis and y-axis), labels, bars, and scale.
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What is the x-axis commonly used for?
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To represent the categories or the independent variable in a graph.
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What do the heights of the bars in a bar graph represent?
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The values of the data for each category.
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When would you use a pie chart?
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To show the parts of a whole or percentage distribution of data.
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How is data organized in a line graph?
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Data points are plotted on a grid and connected by a line to show change over time.
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What does the y-axis represent in a graph?
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The dependent variable or the data values being measured.
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In a bar graph, how should the bars be spaced?
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Bars should be equally spaced apart.
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What is a histogram?
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A type of bar graph that represents the frequency distribution of numerical data, with no gaps between bars.
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Why is it important to label axes on a graph?
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To clearly indicate what each axis represents, making the graph easy to understand.
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What does a trend line in a line graph indicate?
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A pattern or direction in the data, such as an overall increase or decrease.
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What is the key difference between a histogram and a bar graph?
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A histogram is used for continuous data with no gaps between bars, whereas a bar graph is used for categorical data with gaps between bars.
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