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3 years ago

Explain why a graphical display might be skewed. How do you ensure data isn’t skewed?

2 answers:

5 0

Sample Response: If the data is collected in a biased manner, the graph could be skewed. Also, if the number of observations is too small, the graph can be skewed. To ensure the data is not skewed, collect a large representative unbiased sample

bogdanovich [222]3 years ago

5 0

Samples collected with bias can have skewed data plots.

If a sample size is too small, the data can be skewed.

Collecting a large unbiased sample will ensure the data is representative and not skewed.

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Answer:

Step-by-step explanation:

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3 years ago

The Martinez family went to the movies and paid $60 for two adult tickets and three children’s tickets. The Wright family consis

Pepsi [2]

Answer:

a = $13.5

Step-by-step explanation:

Let a = adult tickets

Let c = children tickets

Translating the word problem into an algebraic equation;

For the Martinez family;

2a + 3c = $60

For the Wright family;

3a + 5c = $95.5

Thus, the simultaneous equations are;

$2a + 3c = $60$ ..........equation 1

$3a + 5c = $95.5$ .........equation 2

We would use substitution method to solve;

From equation 2, we make a the subject of formula;

3a = 95.5 - 5c

a = (95.5 - 5c)/3

Substituting the value of "a" into equation 1, we have;

2[(95.5-5c)/3] + 3c = 60

Multiplying all through by 3;

2(95.5 - 5c) + 9c = 180

191 - 10c + 9c = 180

191 - c = 180

c = 191-180

c = $11

To find the value of a;

2a +3c = 60

Substituting the value of "c" into the equation, we have;

$2a + 3(11) = 60$

$2a + 33 = 60$

$2a = 60 - 33$

$2a = 27$

$a = \frac{27}{2}$

a = $13.5

Therefore, the cost of an adult movie ticket is $13.5.

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3 years ago

You use substitution to solve a system of equations and, after simplifying the equations, end with an expression that says 0 = 4

attashe74 [19]

Answer:

Check the first two.

Step-by-step explanation:

Since the statement is false, there are no solutions to the system of equations. This also indicates that the lines are parallel.

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3 years ago

Read 2 more answers