## How statistics can be misleading examples?

The data can be misleading due to the sampling method used to obtain data.

For instance, the size and the type of sample used in any statistics play a significant role — many polls and questionnaires target certain audiences that provide specific answers, resulting in small and biased sample sizes..

## What does the shape of a histogram tell you about the data?

Uniform: A uniform shaped histogram indicates data that is very consistent; the frequency of each class is very similar to that of the others. … Right-Skewed: A right-skewed histogram has a peak that is left of center and a more gradual tapering to the right side of the graph.

## Why can a histogram be misleading?

Histograms can sometimes be misleading because of the way they conflate data into larger bins. For example, the graph showing year of composition shows five tragedies written between 459 and 450 BCE.

## What is the difference between a box plot and 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 would you use a dot plot instead of a histogram?

Dot plots work well for small sets of data, but become difficult to construct for large data sets. A histogram or box plot will deal more efficiently with large data sets. Dot plots show all values in the set.

## What are dot plots best used for?

Dot plots are used for continuous, quantitative, univariate data. Data points may be labelled if there are few of them. Dot plots are one of the simplest statistical plots, and are suitable for small to moderate sized data sets. They are useful for highlighting clusters and gaps, as well as outliers.

## Which information can you obtain from a Boxplot but not from a histogram?

Although a boxplot can tell you whether a data set is symmetric (when the median is in the center of the box), it can’t tell you the shape of the symmetry the way a histogram can. For example, the above figure shows histograms from two different data sets, each one containing 18 values that vary from 1 to 6.

## What is the strength of a histogram?

The strength of a histogram is that it provides an easy-to-read picture of the location and variation in a data set. There are, however, two weaknesses of histograms that you should bear in mind: The first is that histograms can be manipulated to show different pictures.

## When should you not use a histogram?

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins. Bar charts, on the other hand, can be used for a great deal of other types of variables including ordinal and nominal data sets.

## What does a histogram show?

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.

## Why use a box plot?

Why are box plots useful? Box plots divide the data into sections that each contain approximately 25% of the data in that set. Box plots are useful as they provide a visual summary of the data enabling researchers to quickly identify mean values, the dispersion of the data set, and signs of skewness.

## How many bars should a histogram have?

25 data points = 5 bars. 100 data points = 10 bars….Number of Data PointsNumber of Bars101-2008201-5009501-1000101000+11-202 more rows

## 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.

## What are the disadvantages of using a histogram instead of a dot plot?

Disadvantages: Cannot read exact values because data is grouped into categories. More difficult to compare two data sets.

## What is the benefit of using a histogram?

Histograms allow viewers to easily compare data, and in addition, they work well with large ranges of information. They are also provide a more concrete from of consistency, as the intervals are always equal, a factor that allows easy data transfer from frequency tables to histograms.

## What are the advantages of using a box plot?

Boxplot Advantages:Summarizes variation in large datasets visually.Shows outliers.Compares multiple distributions.Indicates symmetry and skewness to a degree.Simple to sketch.Fun to say.

## When would you use a histogram instead of 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.

## How graphs can be misleading?

The “classic” types of misleading graphs include cases where: The Vertical scale is too big or too small, or skips numbers, or doesn’t start at zero. The graph isn’t labeled properly. Data is left out.

## What’s the difference between a dot plot and a histogram?

Describe the differences between a histogram and a dot plot. … A histogram is a chart that groups data into classes and displays the frequencies for those classes, while a dot plot illustrates each individual observation along a horizontal number line.

## Where 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.

## Which 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.