describe the interval you would use for a bar graph if the data rangers from 12 to 39 units.
39 - 12 = 27
How many bars do you want to use? Typically, you can use 5-10 bars. How many would you like to use to cover the range of 27? Divide that number into 27 to get the size of the interval.
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To determine the interval for a bar graph when the data ranges from 12 to 39 units, we need to consider the range of values and the desired level of detail in the graph.
First, let's calculate the range of the data by subtracting the minimum value from the maximum value:
Range = Maximum value - Minimum value = 39 - 12 = 27
To decide on an appropriate interval, it can be helpful to consider the number of bars we want on the graph. A general rule of thumb is to have around 5-10 bars.
Let's use 5 bars as a starting point. To determine the interval size, we can divide the range by the number of bars:
Interval size = Range / Number of bars = 27 / 5 = 5.4
Since we want whole numbers for the interval size, we can round up the interval size to the nearest whole number to ensure that the intervals are evenly distributed. Therefore, the interval we would use for the bar graph would be 6 units.
Alternatively, if we wanted to use 10 bars, we would divide the range by 10:
Interval size = Range / Number of bars = 27 / 10 = 2.7
Again, we would round up the interval size to the nearest whole number, resulting in an interval of 3 units.
Therefore, you can choose between an interval of 6 units (for 5 bars) or an interval of 3 units (for 10 bars) depending on the level of detail you desire in your bar graph.
To determine the interval for a bar graph when the data ranges from 12 to 39 units, you need to consider the range of values and choose a suitable interval size. An interval refers to the size between each category or bar on the graph.
Here's how you can determine the interval:
1. Start by finding the range of the data. The range is the difference between the highest and lowest values. In this case, the range is 39 - 12 = 27 units.
2. Consider the range of values and the number of categories you want to display on the bar graph. This decision depends on the level of detail you want to present. Be cautious not to have too many categories, as it might make the graph crowded and difficult to interpret.
3. Generally, it is advisable to have between 5 and 10 categories on the bar graph to provide a clear visual representation. Let's assume you want 8 categories.
4. Divide the range by the desired number of categories (27 / 8 = 3.375). Keep in mind that the interval doesn't need to be a whole number; it can be a decimal value.
5. Round the interval to a convenient number that makes sense in the context of the data. In this case, rounding 3.375 to the nearest whole number, the interval would become 3.
Therefore, for your bar graph, you would use an interval of 3 units between each category.