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4 years ago

ISBN-13: 978-0-13-365946-7

1 answer:

4 0

Answer:Tables are used to organize exact amounts of data and to display numerical information. Tables do not show visual comparisons. As a result, tables take longer to read and understand. It is more difficult to examine overall trends and make comparisons with tables, than it is with graphs.

Line graphs are used to display data or information that changes continuously over time. Line graphs allow us to see overall trends such as an increase or decrease in data over time.

Bar graphs are used to compare facts. The bars provide a visual display for comparing quantities in different categories or groups. Bar graphs help us to see relationships quickly. However, bar graphs can be difficult to read accurately. A change in the scale in a bar graph may alter one's visual perception of the data.

Circle Graphs are used to compare the parts of a whole. Circle graphs represent data visually in the same proportion as the numerical data in a table: The area of each sector in a circle graph is in the same proportion to the whole circle as each item is to the total value in the table. Constructing an accurate circle graph is difficult to do without a computer. This is because you must first find each part of the whole through several elaborate calculations and then use a protractor to draw each angle. This leaves a lot of room for human error. Circle graphs are best used for displaying data when there are no more than five or six sectors, and when the values of each sector are different. Otherwise they can be difficult to read and understand.

Step-by-step explanation:

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3 years ago

Solve for x. the answer must be simplified. −36x<8

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3 years ago

Read 2 more answers

Michael and laura spent a combined 250 hours in the tutoring center. If Michael spent 40 more hours than laura did,how many hour

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X + y = 250
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x + y = 250
y = x - 40

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3 years ago

What are the conditions a sample needs to meet before you can assume it's binomial and that it approximates a normal distributio

Gemiola [76]

Answer:

1) $np\geq 5$

2) $nq = n(1-p)\geq 5$

Other conditions that are important are:

3) n is large

4) p is close to 1/2 or 0.5

Step-by-step explanation:

1) Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

2) Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n, p)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

In order to apply the normal apprximation we need to satisfy these two conditions:

1) $np\geq 5$

2) $nq = n(1-p)\geq 5$

Other conditions that are important are:

3) n is large

4) p is close to 1/2 or 0.5

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4 years ago