Question

Create a frequency distribution that details width and class boundaries for 5 classes? Record the frequency in each class.

Create a histogram and describe the shape of the data.

September Gas Prices

3.15

3.12

3.12

3.11

3.08

3.08

3.07

3.06

3.03

2.99

2.98

2.97

2.93

2.89

2.79

Answer 1

Solution:

now frequency distribution

Class	class boundaries	class width	Frequency
2.79 - 2.86	2.785 - 2.865	0.08	1
2.87 - 2.94	2.865 - 2.945	0.08	2
2.95 - 3.02	2.945 - 3.025	0.08	3
3.03 - 3.1	3.025 - 3.105	0.08	5
3.11 - 3.18	3.105 - 3.185	0.08	4

Histogram:

comment : Using the above histogram we say that the shape of graph is negatively skewed .

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