Variation in Predictions and Estimates Answers

The table shows the mean number of basketball goals made by four random samples of players from the school team during this year’s season. Sample #Sample Mean Number of Goals17243548Is a valid prediction for the mean of the population possible using these samples?

Julia surveyed her friends to find the number of hours they spend on homework during the week. The data from her survey is displayed in the first table. She then took a random sample of five responses from the population as shown in the second table. Compare the mean of the population with the mean of the given sample. Population Data45313223573630150436Sample Data54621What is the difference between the mean of the sample and the mean of the population?

Peter wants to estimate the mean value rolled on a fair number cube. He has generated four samples containing five rolls of the number cube as shown in the table below. Which sample will result in the greatest mean?Sample DataSample 145243Sample 222656Sample 346342Sample 452436

Looking at the means of these samples, which value is most likely to be the mean of the population from which the samples were taken? Sample NumberSample Mean111.8212.5315.1414.3513.0612.9

Ms. Murray asked her twenty students how many national parks each of them had visited. National Parks VisitedPopulation Data21304543221520340534Calculate the mean number of parks visited by a student from the population. Round the answer to the nearest whole number.

Nadya put the data she collected during her survey in a table. Then she found the mean of each of the four rows of data. Population Data24545242434324434432Find the mean from each row of data. Between what values will the mean of the actual population be found?

Una was asked to write about predicting population means by taking the means of samples. She recorded a list of some statements generated from her classmates.Which statements are true? Select three choices.

The table displays the mean name length for seven samples of students. SampleMean Name Length15.427.136.345.256.064.976.2What can be said about the variation between the sample means?

The table displays the mean for seven random samples. SampleSample Mean123.2226.7324.9424.6528.0626.3723.4Which value is the best estimate of the mean of the population?

Ardem collected data from a class survey. He then randomly selected samples of five responses to generate four samples. Survey DataSample 145243Sample 222657Sample 346341Sample 452436Using his four samples, between what two numbers will Ardem’s actual population mean lie?