(a).

The retail prices of laptop and desktop computers at a certain electronics store are shown.

To create a histrogram, write the computer prices in ascending order.

Table 1 :

Find the Range :

The range can be calculated by .

Therefore the range is .

Identify an interval for the Histogram :

The interval for the histogram can be calculated by using the formula .

.

Tabulate computer price and frequencies for each one and plot the histogram.

Histogram :

Observe the graph :

The graph is bimodal with two separate clusters, which suggests that there are two

different price levels of computers mixed in the data set.

(b).

Calculate Minumum Value :

From Table 1:

Minimum value is .

Calculate First quartile :

Since there are observations and it is an odd number consider the lower half.

The lower half of the data is .