- What can you tell from a histogram?
- What type of data is best displayed in a histogram?
- Why is a box plot better than a histogram?
- Why do we use frequency polygons?
- What is a disadvantage of a bar graph?
- What are line graphs good for?
- How are histograms used in real life?
- What is the advantage and disadvantage of using grouped frequency distributions?
- What is frequency polygon with example?
- What does the shape of a histogram tell us?
- Why can a histogram be misleading?
- What are the merits and demerits of histogram?
- What are the advantages of using a histogram?
- What are the advantages and disadvantages of line graphs?
- Why is a histogram better than a bar graph?
- What does a left skewed histogram mean?
- What are the disadvantages of line graphs?
- What are the disadvantages of frequency polygon?
What can you tell from a histogram?
A histogram shows bars representing numerical values by range of value.
A bar chart shows categories, not numbers, with bars indicating the amount of each category.
Histogram example: student’s ages, with a bar showing the number of students in each year..
What type of data is best displayed in a histogram?
Answer. A “histogram” is used for plotting the occurrences of score frequency in a “continuous data set”. This data set is further divided into classes and they are referred as bins. This histogram is similar to bar charts which is used for dealing variables like nominal and ordinal data set.
Why is a box plot better than a histogram?
Histograms and box plots are very similar in that they both help to visualize and describe numeric data. Although histograms are better in determining the underlying distribution of the data, box plots allow you to compare multiple data sets better than histograms as they are less detailed and take up less space.
Why do we use frequency polygons?
Frequency Polygons. Frequency polygons are a graphical device for understanding the shapes of distributions. They serve the same purpose as histograms, but are especially helpful for comparing sets of data. Frequency polygons are also a good choice for displaying cumulative frequency distributions.
What is a disadvantage of a bar graph?
Bar charts that attempt to represent wide ranges of numbers will struggle to efficiently communicate their message. … Bar graphs tend to be locked into a particular data set, making it hard to show multiple values or changes over time unless the chart is modified, such as by making the bars layered and three-dimensional.
What are line graphs good for?
Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.
How are histograms used in real life?
The primary use of a Histogram Chart is to display the distribution (or “shape”) of the values in a data series. For example, we might know that normal human oral body temperature is approx 98.6 degrees Fahrenheit. … To test this, we might sample 300 healthy persons and measure their oral temperature.
What is the advantage and disadvantage of using grouped frequency distributions?
The advantage of a grouped frequency distribution is that it is small enough for you to get a pretty good idea at a glance how the scores are distributed. The disadvantage is that you are lumping scores together, thus losing some of the information in the original scores.
What is frequency polygon with example?
A frequency polygon is a graph constructed by using lines to join the midpoints of each interval, or bin. … The heights of the points represent the frequencies. A frequency polygon can be created from the histogram or by calculating the midpoints of the bins from the frequency distribution table.
What does the shape of a histogram tell us?
This shape may show that the data has come from two different systems. If this shape occurs, the two sources should be separated and analyzed separately. … In other words, all the collected data has values greater than zero. Skewed left: Some histograms will show a skewed distribution to the left, as shown below.
Why can a histogram be misleading?
The y-axis of a histogram shows how many observations are in each group, using counts or percentages. A histogram can be misleading if it has a deceptive scale and/or inappropriate starting and ending points on the y-axis. … It also makes the data set look smaller, if you don’t pay attention to what’s on the y-axis.
What are the merits and demerits of histogram?
It helps to visualize the distribution of the data. Demerits are:1) Cannot read exact values because data is grouped into categories. 2) More difficult to compare two data sets. 3) Use only with continuous data.
What are the advantages of using a histogram?
The main advantages of a histogram are its simplicity and versatility. It can be used in many different situations to offer an insightful look at frequency distribution. For example, it can be used in sales and marketing to develop the most effective pricing plans and marketing campaigns.
What are the advantages and disadvantages of line graphs?
Line graph: Advantage: It’s better for seeing the rate clearly. Disadvantage: It’s harder to compare.
Why is a histogram better than a bar graph?
Histograms are used to show distributions of variables while bar charts are used to compare variables. Histograms plot quantitative data with ranges of the data grouped into bins or intervals while bar charts plot categorical data. … Note that it does not make sense to rearrange the bars of a histogram.
What does a left skewed histogram mean?
If the histogram is skewed left, the mean is less than the median. This is the case because skewed-left data have a few small values that drive the mean downward but do not affect where the exact middle of the data is (that is, the median).
What are the disadvantages of line graphs?
What Are the Disadvantages of A Line Graph?Plotting too many lines over the graph makes it cluttered and confusing to read.A wide range of data is challenging to plot over a line graph.They are only ideal for representing data made of total figures such as values of total rainfall in a month.
What are the disadvantages of frequency polygon?
There is one major drawback with this form. All the data is in a clustered form and it is very difficult for the people to see to it that they are going to segregate the data.