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    Judy has  data  for two different months that she grew vegetables in her garden. She has made   with the data but thinks there must be a way to combine the data into one graph for easier readability. 
    ::朱迪拥有两个不同月的数据 她种植蔬菜 在她的花园。她用这些数据做了数据,但认为必须有一种方法 将数据合并成一个图表 以便更容易读取。

    This is the data Judy has for the months of July and August showing how many vegetables she grew.
    ::这是茱蒂7月和8月的数据 显示她种了多少种蔬菜

    July August
    30 carrots 60 carrots
    10 tomatoes 20 tomatoes
    25 zucchini 30 zucchini
    15 squash 25 squash
    10 potatoes 20 potatoes

    Judy does not want 2 separate graphs displaying this data. She wants both months to be displayed in the same graph. She also wants to find out which vegetable had the most gain in growth from July to August.
    ::Judy 不希望两个不同的图表显示此数据。 她想要两个月都显示在同一图表中。 她还想知道7月至8月哪一种蔬菜增长得最多。

    In this concept, you will learn how to create double bar graphs to display more than one set of data.
    ::在此概念中, 您将学习如何创建双条形图以显示多个数据集 。

    Double Bar Graphs
    ::双条图

    A  double bar graph  is used to display two sets of data on the same graph. For example, if you wanted to show the number of hours that students worked in one month compared to another month, we would use a double bar graph.
    ::双条图用于显示同一图上的两组数据。例如,如果您想要显示学生在一个月中工作与另一个月相比的小时数,我们将使用双条图。

    The information in a double bar graph is related, and it compares one set of data to another.
    ::双条形图中的信息是相关的,并将一组数据与另一组数据进行比较。

    A double bar graph is made in the same way that a single  bar graph  is made except that instead of one bar of data there will be two bars of data. Here are the steps involved:
    ::制作双条图的方式与制作单条图的方式相同,但数据栏中将有两个数据栏,而不是一个数据栏。

    1. Draw in the two axes. One with items being counted (x axis) and one with the scale that is going to be used to count (y axis).
      ::在两个轴中绘制。 其中一个项目被计数( x 轴) , 一个项目被计数( y 轴) , 一个项目将被用比例尺来计算( y 轴) 。
    2. Decide on the best scale to use given the data.
      ::根据数据决定使用的最佳规模。
    3. Draw in the bars to show the data.
      ::在栏中绘制以显示数据 。
    4. Draw one category in one color and the other category in another color.
      ::以一个颜色绘制一个类别,以另一个颜色绘制另一个类别。

    Here is the data for the number of ice cream cones sold each week at an ice cream stand during the months of July and August.
    ::以下是7月和8月每周在冰淇淋摊出售的冰淇淋锥的数量数据。

      July August
    Week 1 500 800
    Week 2 800 900
    Week 3 700 600
    Week 4 900 800

    A bar graph can be created to compare the data for July and August. First, draw in the axes.
    ::可以创建一个图标图来比较7月和8月的数据。首先,在轴中绘制。

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    Next, write in the week numbers at the bottom and use a scale for the side. Since ice cream cone sales are in the hundreds, it makes sense to use a scale from 0 to 1000 counting by hundreds. Now, draw in the bars. Use blue for July and red for August.
    ::下一步, 请在底部写周数, 并用一个比例尺作为边边边。 由于冰淇淋锥的销售量是数百, 使用一个从0到1000的乘以数百的乘以。 现在, 请在栏杆上画一个。 7月使用蓝色, 8月使用红色 。

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    This double bar graph displays the number of ice cream cones sold in two different months of July and August, using only one graph instead of two separate graphs.
    ::这个双条形图显示的是7月和8月两个不同月份销售的冰淇淋锥的数目,只使用一个图,而不是两个不同的图。

    Examples
    ::实例

    Example 1
    ::例1

    Earlier, you were given a problem about Judy wanting to find a way to display her data from both months of July and August in one graph.
    ::早些时候,你遇到一个问题 朱迪想找到一种方法 来显示她的数据 从7月和8月两个月的数据 在一个图中。

    She has her data organized showing how many vegetables were grown in both July and August:
    ::7月和8月都种植了多少种蔬菜:

    July August
    30 carrots 60 carrots
    10 tomatoes 20 tomatoes
    25 zucchini 30 zucchini
    15 squash 25 squash
    10 potatoes 20 potatoes

    First, Judy can create her bar graph by deciding on a scale and titles for her X-axis. Her  range  of data is between 10 and 60, so a scale of 0-70 counting by tens is an appropriate scale. Her X-axis will be labeled by each vegetable she grows in her garden.
    ::首先, 朱迪可以通过决定 X 轴的大小和标题来创建她的条形图。 她的数据范围在 10 到 60 之间, 所以以 0 - 70 计数 以 10 表示的比值是 适当的 。 她的 X 轴将贴在她花园里种植的每只蔬菜的标签上 。

    Next, Judy decides to let a blue bar represent July and a red bar represent August. This will separate the data so it does not get mixed up, but allows the data to be shown in the same graph.
    ::接下来, 朱迪决定让蓝色酒吧代表 7 月, 红色酒吧代表 8 月。 这将将数据分开, 这样它不会被混淆, 但允许在同一图表中显示数据 。

    Then, Judy can put the graph all together and use the graph to describe patterns she sees in her vegetable growing. The question she wanted answered was, which vegetable had gained the most growth between July and August. To find the answer, look for the bars that have the biggest difference in amounts of vegetables grown.
    ::然后,朱迪可以把图表拼凑在一起,用图表来描述她在蔬菜种植中看到的模式。她想要回答的问题是,7月至8月,蔬菜增长最快。要找到答案,请看看蔬菜种植量差异最大的条条。

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    The answer is carrots. There were only 30 carrots grown in July, but 60 carrots were grown in August. That is the most growth out of any vegetable in Judy's garden.
    ::答案是胡萝卜。7月份只种植了30只胡萝卜,8月份却种植了60只胡萝卜。这是朱迪花园中任何蔬菜中生长最多的。

    Example 2
    ::例2

    This bar graph displays the number of boys and girls who have a favorite sport. Since the graph shows both boys and girls, you can compare the data as well.
    ::此条图显示拥有最喜爱运动的男女生人数。 由于此图显示男女生人数, 您也可以比较数据 。

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    What is the difference between the number of boys who chose track as their favorite sport and the number of girls who did?
    ::选择田径运动作为其最爱的运动的男孩人数与选择田径运动的女孩人数之间有什么区别?

    First, find the sport being asked about. In this case it is track.
    ::首先,先找到被问到的体育赛事,在此情况下,它是正轨。

    Next, compare the amount of boys and girls who like track by comparing the pink and blue bars representing track data. Five girls chose track while only 2 boys chose track as their favorite sport.
    ::接下来,比较喜欢田径的男女儿童人数,比较粉色和蓝色的酒吧代表着田径数据。 5名女孩选择了田径,而只有2名男孩选择了田径作为他们最喜欢的运动。

    Then, subtract the data from one another to find the different between the data. Because more girls chose track than boys, you can subtract the number of boys from the number of girls.
    ::然后,从彼此中减去数据,以找出数据之间的差异。因为更多的女孩选择了轨道,而男孩选择了轨道,所以从女孩的数量中可以减去男孩的数量。

    5 − 2 = 3

    The answer is 3. There is a difference of 3 girls compared with boys who chose track as their favorite sport.
    ::答案是3:与男孩相比,女孩有3个,男孩选择了田径运动作为他们最喜欢的运动。

    Use each of the graphs in each example to answer the questions.
    ::使用每个示例中的每个图表回答问题。

    Example 3
    ::例3

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    What is the favorite sport of girls?
    ::女孩们最喜欢的运动是什么?

    First, look for the highest bar in the graph in pink. This bar color represents girl's favorite sports.
    ::首先, 寻找粉红色图表中最高的栏杆。 这种条形颜色代表女孩最喜欢的运动 。

    Next, look at the x axis to see what data is represented by that bar.
    ::接下来,看看 x 轴,看看该条代表的数据是什么 。

    Then, double check that the y axis amount is indeed the highest amount of any favorite sport among girls. In this case, soccer is the favorite with 10 girls choosing it, which is also the highest amount on the graph for girls favorite sports.
    ::然后,重复检查Y轴数量是否确实是女孩中任何最受欢迎的运动的最高数量。 在这种情况下,足球是最受欢迎的,有10个女孩选择了足球,这也是图表中女孩最喜欢的运动的最高数量。

    The answer is soccer.
    ::答案是足球。

    Example 4
    ::例4

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    What is the favorite sport of boys?
    ::男孩们最喜欢的运动是什么?

    First, look at the graph to find the highest bar in the graph in blue. This represents the favorite sports among boys.
    ::首先, 查看图表, 找到蓝色图中最高的栏目。 这是男孩中最受欢迎的运动 。

    Next, look at the x axis to see which sport is represented by the highest bar in blue.
    ::接下来,看看x轴,看看什么运动代表的是蓝色最高栏杆。

    Then, double check that the bar indeed matches with the highest data amount on the y axis.
    ::然后双倍检查栏是否与 y 轴上的最高数据值相符 。

    The answer is basketball.
    ::答案是篮球

    Example 5
    ::例5

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    Which sport is liked equally by both boys and girls?
    ::男孩和女孩都同样喜欢哪种运动?

    First, understand the questions by realizing you are looking for two bars that are representing equal data.
    ::首先,通过意识到你正在寻找两个代表平等数据的栏目来理解问题。

    Next, find the two bars on the graph that line up equally with one another. Both the blue and pink will be at the same height on the graph.
    ::接下来,在图形上找到两个线条, 线条线对齐。 蓝色和粉色的颜色都会在图形上的同一高度 。

    Then, look at the x axis to determine which sport is represented by the equal data among boys and girls.
    ::然后,看看X轴线,以确定男女儿童之间的平等数据代表了哪些体育。

    The answer is baseball.
    ::答案是棒球

    Review
    ::回顾

    Use the following double bar graph to answer the following questions.
    ::使用下面的双条形图回答下列问题。

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    1. What is this graph measuring?
      ::这个图表是用来测量什么的?
    2. What does the horizontal axis represent?
      ::水平轴代表什么 ?
    3. What does the vertical axis represent?
      ::垂直轴代表什么?
    4. What is being compared?
      ::什么是比较?
    5. Is this a single bar graph or a double bar graph?
      ::这是单条形图还是双条形图?
    6. What is the scale of measurement?
      ::衡量尺度是什么?
    7. What is the interval of the scale?
      ::尺度的间隔是多少 ?
    8. Which planet has the greatest gravitational pull?
      ::哪个星球有最大的引力拉力?
    9. What is it's measure?
      ::什么是衡量标准?
    10. Which planet has the least gravitational pull?
      ::哪个星球的引力最小?
    11. What is it's measure?
      ::什么是衡量标准?
    12. Which planet has the greatest difference between its gravitational pull and earth's gravitational pull?
      ::哪个星球的引力拉动 和地球引力拉动 之间有最大的区别?
    13. What is the measure of Neptune's gravitational pull?
      ::海王星引力拉动的量度是多少?
    14. What is the measure of Venus' gravitational pull?
      ::金星引力拉动的量度是多少?
    15. Which planet has a gravitational pull that is closest to earth's gravitational pull?
      ::哪个星球的引力拉力 最接近地球的引力拉力?