Question

As part of a statistics project, a teacher brings a bag of marbles containing 500 white marbles and 300 red marbles. She tells the students the bag contains 800 total marbles, and asks her students to determine how many red marbles are in the bag without counting them. A student randomly draws 150 marbles from the bag. Of the 150 marbles, 53 are red. The data collection method can best be described as Census Clinical study Survey Controlled study

Answer 1

Survey

Explanation:

Survey is the way to collect data by asking questions to get information on topic of interest. Generally, this method is used to take opinion, information about individuals.

Since teacher is asking students to determine number of red balls.

Hence given method called Survey.

Further, When we study on every individual or study on the whole population that study is called Census.

In Clinical Study we generally study related to medical field.

Controlled Study is when we compare two or more individual on the basis of their characteristics.

Answer 2

Answer with explanation:

We know that a SURVEY is an general process to investigate the features of a population by gathering data from samples of entire population and estimate number of a particular feature by using statistical techniques.

Given : As part of a statistics project, a teacher brings a bag of marbles containing 500 white marbles and 300 red marbles. She tells the students the bag contains 800 total marbles, and asks her students to determine how many red marbles are in the bag without counting them.

A student randomly draws 150 marbles from the bag. Of the 150 marbles, 53 are red.

We can see that teacher has given marbles of different colors of and ask to determine number of red marbles on the basis of characteristic probability of red marbles.

The data collection method can best be described as survey because students has to determine the number of red marbles by observing the probability of red marbles from the sample of 150 marbles drawn by him.