Question

In: Statistics and Probability

Find an example of a histogram or a bar chart outside of STAT 100.

Find an example of a histogram or a bar chart outside of STAT 100.

Solutions

Expert Solution

Suppose you want to measure the height of any particular tree (like apple) in centimeters (cm). You decide to the representation of data into the range of heights. Let the height of tree varies from 100 to 500 cm. You divide the range into four part 100-200 (means 100 or above and below 200) ; 200- 300; 300-400; 400-500. for example if tree height is 305 cm it falls into range 300-400 cm. The following data is collected

194.2 125.3 106.8 190.9 198.6 173.2 148.6 100.0 172.5 129.5 249.5 281.9 249.5 248.8 219.3 205.7 292.7 233.3 265.9 277.5 291.0 275.9 212.9 217.9 282.7 275.5 235.0 281.8 216.6 290.4 225.9 231.8 206.0 289.5 256.2 357.7 387.7 366.0 379.8 325.0 301.0 396.5 380.5 315.3 327.4 334.1 345.1 354.6 317.9 393.5 321.2 307.0 345.0 323.5 311.9 353.8 314.5 381.4 350.5 321.1 358.9 398.1 388.2 343.3 357.8 495.2 442.2 415.7 452.0 404.5 452.8 459.0 422.3 429.9 428.3 406.3

We can represents the data as follows

Range Number of Tree
100-200 10
200-300 25
300-400 30
400-500 11

The above data can also be represented by histogram as

2. Now suppose we want to see what type of movie people are watching in a movie theators. we collected the following data

Type of movie Number of People
Action 25
Horror 15
Comedy 22
Romantic 20

We represent this data by bar plot as

Notice that barplots are good when we have different caogories (qualitative), but if we have continuous data than we should use histogram.

orchestra answered 2 years ago
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