Increasing the sample size of an opinion poll will reduce the variability of opinions in the sample. variability of the estimates made from the data collected in the poll. bias of the estimates made from the data collected in the poll. effect of nonresponse on the poll.

## Step 1<br />The problem is about the impact of increasing the sample size in an opinion poll. The options provided are:<br />- Variability of opinions in the sample<br />- Variability of the estimates made from the data collected in the poll<br />- Bias of the estimates made from the data collected in the poll<br />- Effect of nonresponse on the poll<br /><br />## Step 2<br />The first option, "Variability of opinions in the sample", is not necessarily true. The variability of opinions in the sample is not directly affected by the sample size. It is more related to the diversity of the sample rather than the size.<br /><br />## Step 3<br />The second option, "Variability of the estimates made from the data collected in the poll", is true. The variability of the estimates made from the data collected in the poll is reduced when the sample size is increased. This is because a larger sample size provides a more accurate representation of the population, leading to more precise estimates.<br /><br />## Step 4<br />The third option, "Bias of the estimates made from the data collected in the poll", is not necessarily true. The bias of the estimates made from the data collected in the poll is not directly affected by the sample size. It is more related to the methodology of the poll rather than the size.<br /><br />## Step 5<br />The fourth option, "Effect of nonresponse on the poll", is not necessarily true. The effect of nonresponse on the poll is not directly affected by the sample size. It is more related to the methodology of the poll rather than the size.