The statistical values for the given sample data are as follows:

(a) The mean phenotype code is approximately 2.1 (rounded to the nearest tenth).

(b) The median phenotype code is 2.0.

(c) The mode phenotype code is 1 (the most frequent value).

(d) The midrange (average of the minimum and maximum values) is 2.5.

These results reflect a balance in the phenotype distribution, though they may not immediately suggest a clear pattern about the influence of CO₂ on pea phenotypes without more context.

Do you want more details or have any questions?

Here are five related questions:

1. How do you interpret the mode in this context?
2. What is the significance of using the midrange in data analysis?
3. Can the presence of multiple modes affect the interpretation of the data?
4. How might the distribution of this data look visually?
5. How would the addition of more phenotype codes affect these calculations?

Tip: The mode is particularly useful for categorical data, where the most frequent category can be of special interest.