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In this lesson, we will learn how to determine the appropriate method for collecting data, choosing between sample or mass population method.

Q1:

Which is the most appropriate method for collecting data about the amount of salt in seawater.

Q2:

Bassem asked all the students in his class how many text messages they send on average per day. He found out that the average was 24. He then claimed that students in his school send on average 24 text messages per day. Is this figure a sample statistic or a population characteristic?

Q3:

Determine the appropriate method for collecting the data in the following case: checking the quality of wheat before buying.

Q4:

Which of these makes an inference in statistics?

Q5:

Dalia knows all the families living in her area quite well. She says she has found out that the average number of children per family is 2.3. Is this figure a sample statistic or a population characteristic?

Q6:

A poll was published before a senate election predicting that Mrs. Smith would win with 5 2 % of the votes cast. Is this figure a sample statistic or a population characteristic?

Q7:

Which would be the most appropriate method for collecting the data when checking the status of newly fitted gas pipes before switching on distribution?

Q8:

Which of the following data sets would be a suitable to evaluate the service of one of the hotels in the UK?

Q9:

Which of the following data sets is suitable to measure the individual incomes of the population?

Q10:

Which of the following data sets would be suitable to determine the average score on a test in a class with 25 students?

Q11:

A study claims that 9 6 % of people aged 16 to 24 in a certain country own a smart phone. Is this a sample statistic or a population characteristic?

Q12:

Which of the following data sets would be suitable to find how far a crop infestation has spread?

Q13:

The last census showed that slightly more than one-third of people rent the home where they live. Is this figure a sample statistic or a population characteristic?

Q14:

Which of the following data sets would be suitable to check the education level in the poor villages in Africa?

Q15:

Which of the following data sets would be suitable to collect information about the quantity of oil available in different locations in the US?

Q16:

Which of the following data sets would be suitable to see the ratio of bacteria in water in a stream?

Q17:

For a school project, three students need to produce a sample of students at their school. Which of the following methods leads to a random sample?

Q18:

Which of the following data sets would be suitable to check the quality of production of a car manufacturer?

Q19:

Which of the following data sets is suitable to calculate how many hospitals there are in a city?

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