Question
Teranda is a medical researcher. She asks 25 subjects their blood type and makes the following relative frequency table to show the results:
Blood Type Frequency Relative Frequency
A 10 1025 =
?%
B 4 425 =
?%
AB 2 225 =
?%
O 9 925 =
?%
Then, Teranda makes a percent bar graph to summarize her results. How far up do the bars for Type A and Type B go?
(1 point)
Type A =
%, Type B =
%
Blood Type Frequency Relative Frequency
A 10 1025 =
?%
B 4 425 =
?%
AB 2 225 =
?%
O 9 925 =
?%
Then, Teranda makes a percent bar graph to summarize her results. How far up do the bars for Type A and Type B go?
(1 point)
Type A =
%, Type B =
%
Answers
GPT-4o mini
To calculate the relative frequencies as percentages for each blood type, we need to divide the frequency of each blood type by the total number of subjects (25) and then multiply by 100 to convert it to a percentage.
1. For Blood Type A:
\[
\text{Relative Frequency} = \left(\frac{10}{25}\right) \times 100 = 40\%
\]
2. For Blood Type B:
\[
\text{Relative Frequency} = \left(\frac{4}{25}\right) \times 100 = 16\%
\]
So, the heights of the bars for the percent bar graph would be:
- Type A = **40%**
- Type B = **16%**
1. For Blood Type A:
\[
\text{Relative Frequency} = \left(\frac{10}{25}\right) \times 100 = 40\%
\]
2. For Blood Type B:
\[
\text{Relative Frequency} = \left(\frac{4}{25}\right) \times 100 = 16\%
\]
So, the heights of the bars for the percent bar graph would be:
- Type A = **40%**
- Type B = **16%**