i need all the answers correct 1. Research has suggested that breakfast is the m
ID: 2947760 • Letter: I
Question
i need all the answers correct
1. Research has suggested that breakfast is the most important meal of the day. A nutritionist randomly selects 100 individuals and asks them: "Did you have breakfast this morning? Yes or no?" (a) What is an appropriate method for graphing the data? (b) Why is it appropriate? 2. A pet store owner is interested in the mumber of pets owned by her customers. She takes a random sample of 100 customers and asks them "How many pets do you own?" (a) What is an appropriate method for graphing the data? (b) Why is it appropriate? 3. Choose the best answer. Justifv for full credit. (a) The Knot.com surveyed nearly 13,000 couples, who married in 2017, and asked how much they spent on their wedding. The average amount of money spent on was $33,391. The value $33,391 is a (iparameter (ii) statistic (iii) cannot be determined from information provided. (b) A marketing agent asked people to rank the quality of a new soap on a scale from 1 (poor) to 5 (excellent). The level of this measurement is (i) nominal (ii) ordinal (ii) interval (iv) ratio 4. A school district wanted to assess the effectiveness of a new reading readiness program for 1' graders. The school district is divided into the individual first grade classrooms and 10 classrooms are randomly selected. All of the children in each of the 10 selected classrooms are (a) What type of sampling method is being used? (b) Please explain your answer 5· The frequency distribution below shows the distribution of average seasonal rainfall in San Francisco Page 2 of 8Explanation / Answer
1.Pie chart is the appropriate method of graphing.
Because it shows percentage or proportional data and usually the percentage represented by each category. It dispalys relative proportions of given yes or no data. It is simple and visually simpler.
2. Bar graph is the appropriate method of graphing.
Some households will own more than 1 pet and others do not own any pets. So a bar graph is the most appropriate vehicle for displaying the data.
3. a) Statistic is the answer.
statistcs are the numbers that summerise data from the sample. where as parameter is the number
that summarise data for an entire population.
So the average amount of money spent 33391 is a statistic.
b) Answer is Ordinal.
Ordinal data is categorial. The data exists on an ordinal scale, one of the 5 levels of measurement.
poor to excellent ie.1 to 5. Ordinal provides good information about the order of choices such as in
a customer satisfaction survey.
4. Sampling method is cluster sampling.
In this we should divide the population into groups(clusters). Then obtain a simple random sample
of somany clusters from all possible clusters. Then obtain data on every sampling unit in each of the
randomly selected clusters. In the given problem of 1st grade children of reading readiness program is
like this only.
5.question incomple
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