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77julia77 [94]
3 years ago
14

A data set has the following characteristics: Mean: 4.9 Median: 6 Mode: 6 Variance: 4 The z-score is the number of

Mathematics
2 answers:
faust18 [17]3 years ago
3 0
The z-score is the number of a data value that represents how many standard deviation is it from the mean. It is calculated from the ratio of the difference of a data value and the population mean and the standard deviation of the data set. Having a z-score of zero would mean that the value is the same as the mean. A z-score that is greater than 1 would mean that the value is x standard deviation greater than the mean. If for a certain data, a z-score of  positive 2.5 is calculated, then it means that the data is 2.5 standard deviations away and above from the mean of the whole set. In a normal 
hjlf3 years ago
3 0

Answer:

Standard deviations and mean

Step-by-step explanation:

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What is the answer for 2(a+b)=
Rainbow [258]
<h3>It is equivalent to 2a+2b</h3>

We use the distributive property.

Multiply the outer term 2 by each term inside ('a' and b)

2 times a = 2a

2 times b = 2b

We add those results to get 2a+2b. We cannot combine these terms as they are not like terms.

8 0
3 years ago
A line has a slope of 9 and a y-intercept of 5.What is its equation in slope-intercept form
salantis [7]

Answer:

y=9x+5

Step-by-step explanation:

y=mx+b is the slope-intercept form where m is the slope and b is the y-intercept.

Given that m (the slope) = 9 and b (the y-intercept) = 5, we can substitute directly into the equation and get this answer:

y=9x+5

8 0
3 years ago
I'm going to test you (deff not for my hw)
Alja [10]

The first sequence, it is increase +1 for every number, because 2-3 is 1, 3 - 5 is 2, and 5 - 8 is 3. So, lets add 4 to 8, and we will know the next number of the sequence.

4 + 8 = 12

So, the next number in the first sequence is:

1, 1, 2, 3, 5, 8, 12

Second Sequence:

The second equation is doing exactly the same thing (it increases by 1 every number it goes) just this one is decreasing.

Proof: 26 - 24 is 2, 24 - 21 is 3, and 21 - 17 is 4.

Lets subtract 5 to 17 to know the next number.

17 - 5 = 12

So our next number is:

26, 24, 21, 17, 12

4 0
3 years ago
Which two properties can you use to find (3.4×4)×(25×1) mmentally. Explain.Remember that the parentheses tell you which factors
artcher [175]
Tho would use order of operations!
7 0
3 years ago
Eli was mixing blue paint and yellow paint in the ratio of 2:3 to make green paint.he wants to make 45 liters of green paint. He
liberstina [14]

The ratio between the amount of blue and yellow paint needed to make green paint is 2: 3.

That is, for every 2 liters of blue paint you need 3 liters of yellow paint.

In the same way, for every 4 liters of blue paint, 6 liters of yellow paint are needed.

Then, to continue filling the table, you must consecutively sum 2 liters of blue paint and 3 liters of yellow paint in the corresponding column. This will increase the amount of green paint by a factor of 5 liters.


The same procedure is followed until 45 liters are summed to the green paint column. Then, the data in that row will indicate how much blue and yellow paint is needed:

18 liters of blue paint

27 liters of yellow paint

To verify the result divided 18/27

The result should be 0.6667 = 2/3, which is the ratio sought

5 0
3 years ago
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