Q. 2.118 - Elementary Statistics

Question

Residential Energy Consumption. Refer to the energy consumption data given in Exercise 2.84.

a. Construct a table similar to Table $2.14$ for the data, based on the classes specified in Exercise 2.84. Interpret your results.

b. Construct an ogive for the data.

Step-by-Step Solution

Answer

(a) The table for the data is shown in figure 

(b) Construct an ogive for the data  graph is shown in.

Part (a) Step 1: Given Information

Construct a table similar to Table $2.14$ for the data, based on the classes.

Part (a) Step 2: Explanation

Construct a table similar to Table  for the data,

From the result of previous exercise,

Part (b) Step 3: Given Information

Refer to the energy consumption data. Construct an ogive for the data. 

Part (b) Step 4: Explanation

The cumulative relative frequency is the cumulative frequency divided by total frequency of . Then,

Part (b) Step 5: Explanation

Add the above points to the graphs and join them by a straight line as shown below,