How to Make a Histogram: Stats Homework Help

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In summary, a histogram is a type of graph used to display the frequency of data in different intervals. The x-axis is divided into equally-spaced segments and a bar is placed in each interval to represent the number of data points that fall within that range. This is a helpful tool for visualizing data and determining patterns or trends. Google may not always provide the best explanation, but with a bit of practice and understanding, creating a histogram is a simple task.
  • #1
mcknia07
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I am trying to help my brother on his Stats homework, but for the life of me, I can't rememeber how to make a histogram. He has the answers to compare to, but is unsure how they got to them, as am I. It's been so long since I have done this stuff, I need a little refresher. Google is not helping so much like it normally does, lol.
 
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it's just a frequency chart. divide the x-axis into equally-spaced segments, and place a bar there. height of bar is number of data points that fall in that interval.
 
  • #3


mcknia07 said:
Google is not helping so much like it normally does, lol.

First entry returned bu Google:

http://en.wikipedia.org/wiki/Histogram

self explanatory
 
  • #4


1. Determine how many bins you want to implement, for example, 10 bins: 1-10, 11-20, 21-30, 31-40, 41-50, 51-60, 61-70, 71-80, 81-90, 91-100.

2. Create a graph y vs x. y will be the number of times a number appears that belongs in either one of the bins. x will be the bin number starting with lowest number. (x values: 1, 11, 21, 31, 41, 51, 61, 71, 81, 91)

3. Count and fill out the graph.
 
  • #5


Thanks everyone :) I think I understand it now.
 

FAQ: How to Make a Histogram: Stats Homework Help

What is a histogram?

A histogram is a graphical representation of data that shows the distribution of numerical values within a dataset. It consists of a series of bars, with the height of each bar representing the frequency or count of data within a specific range or interval.

What are the steps to make a histogram?

The steps to make a histogram are as follows: 1. Determine the number of intervals or bins to divide the data into. 2. Calculate the range of the data by subtracting the minimum value from the maximum value. 3. Calculate the width of each interval by dividing the range by the number of bins. 4. Create a frequency table by counting the number of data points that fall within each interval. 5. Draw the histogram, with the x-axis representing the intervals and the y-axis representing the frequency counts.

What is the purpose of a histogram?

The purpose of a histogram is to visually display the distribution of data and identify any patterns or trends within the data. It is particularly useful for identifying the central tendency, spread, and skewness of a dataset.

What types of data are suitable for a histogram?

Histograms are suitable for displaying numerical data, including continuous, discrete, and categorical data. However, it is important to note that the intervals or bins used in a histogram must be chosen carefully to accurately represent the data and avoid misleading interpretations.

How do you interpret a histogram?

To interpret a histogram, you should look at the shape, center, and spread of the data. The shape can indicate whether the data is symmetric, skewed, or bimodal. The center can be identified by the peak or mode of the histogram, while the spread can be estimated by the range or standard deviation of the data. Additionally, you can also look for any outliers or gaps in the data.

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