Question

1. Research has suggested that breakfast is the most important meal of the day. A nutritionist...

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 number 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?

Math   Statistics-And-Probability   
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Answer #1

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(a) Bar chart is approriate method for graphing the data.

(b) It is appropriate because here the valriable: "Did you have breakfast this morning" is categorical data. So, it is displayed as Bar chart. The vertical direction will measure the number of individuals who said " Yes" and "No" respectively. The horizontal axis will not have any scale. There will be 2 bars: One for "Yes" answer and the other for "No" answer.

2.

An approriate method for graphing the data is Histogram.

(b) It is approiporiate because the variable:"Number of pets" is numerical variable. It will have many rectangles, each rectangle for the number of pets: such as 0,1,2,.. The area of each rectangle will be proportional to the frequency (Number of customers) of the variable (number of pets).

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