Question

Marco is interested in the number of penguins who live on a particular ice floe. He decides to take an aerial photo of

the floe and create a 20 by 20 grid on the photo. He randomly selects 3 cells and counts the number of penguins in
each. He then finds the mean number of penguins for those 3 cells. Marco repeats this process for a total of 50
samples and makes a dotplot of the 50 means. This graph is an approximation of
O stratified random sampling.
the distribution of sample data.
the distribution of the population.
the sampling distribution of means.
the sampling distribution of proportions,
M

Answer 1

Answer: D

Step-by-step explanation: In this experiment, the researcher, Marco first collectd the data values, then computes the sample means and finally obtains the sampling distribution of sample means.