Question

the table below shows the frequency - distribution of the rainfall on 52 consecutive thursdays in a certain city. use the frequency distribution to construct a histogram. do the data appear to have a distribution that is approximately normal?

class	frequency
0.20 - 0.30	12
0.40 - 0.50	5
0.60 - 0.70	1
0.80 - 0.90	8
1.00 - 1.10	1
1.20 - 1.30	2

do the data appear to have a distribution that is approximately normal?
a. no, it is not symmetric.
b. no, it is approximately uniform.
c. yes, it is approximately normal.
d. no, it has no obvious maximum.

Explanation:

Step1: Recall normal - distribution properties

A normal - distribution histogram is symmetric about the mean, with most of the data in the middle and tapering off at the ends.

Step2: Analyze the given frequency distribution

The frequencies are 25 for the class \(0 - 0.10\), 12 for \(0.20 - 0.30\), 5 for \(0.40 - 0.50\), 1 for \(0.60 - 0.79\), 8 for \(0.80 - 0.90\), 1 for \(1.00 - 1.19\), and 2 for \(1.20 - 1.30\). The distribution is not symmetric. The data is concentrated on the lower - end of the range.

Answer:

A. No, it is not symmetric.