Final answer:
The theoretical probability of spinning a one on the spinner is 1/6 or approximately 0.167.
Step-by-step explanation:
The theoretical probability of spinning a one on the spinner can be calculated by dividing the number of favorable outcomes (spinning a one) by the total number of possible outcomes. If the spinner has 6 equal sectors, labeled with numbers 1 to 6, and only 1 sector is labeled with a one, then the probability of spinning a one is 1/6 or approximately 0.167 when rounded to the nearest tenth. This means that out of every 6 spins, we would expect to get a one once.