Question

jamie made a frequency table of the bridge data. u.s. bridges
length (ft) tally frequency
(first interval) 卌卌 ii 7
(last interval) ii 2
based on the tallies and frequencies for the first and last intervals, how many intervals of what length did jamie use?
a. 4 intervals of 1000 feet
b. 5 intervals of 1000 feet
c. 6 intervals of 500 feet
d. 7 intervals of 500 feet
please select the best answer from the choices provided

Explanation:

Step1: Analyze the frequency - table data

We know the number of intervals for the first and last intervals. Let's assume the total number of intervals is \(n\).

Step2: Calculate the number of intervals

The first interval has a frequency of 7 and the last has a frequency of 2. We need to find the number of intervals based on the given choices.
If we consider the range of values and the distribution of frequencies, we note that if we use 6 intervals of 500 feet each, we can create a frequency - table that can potentially match the given first and last interval frequencies.
4 intervals of 1000 feet each would be too large for a detailed distribution in most cases when we have non - zero frequencies for the first and last intervals as given. 5 intervals of 1000 feet each is also too broad. 7 intervals of 500 feet each may lead to over - segmentation in some cases.

Answer:

C. 6 intervals of 500 feet