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il63 [147K]
3 years ago
15

Dr. Cwetna recorded all of the grades on a unit test on the chart below.

Mathematics
2 answers:
labwork [276]3 years ago
4 0

Answer:

1. 82.75

2.10.65

3. 93.4, 72.1

4. 104.05, 61.45

5. 114.7, 50.8

6. Yes

7.  Because of the placement of these ranges on the graph

8. 35/91 = .38 %

By taking the amount of all of the students who scored a 90 or above and dividing it by the total amount of students.

Step-by-step explanation:

PLEASE MARK ME BRANLIEST

Molodets [167]3 years ago
3 0

Answer:

I got 2 more questions can somebody answer for me plz that adds to this. In your own words, explain HOW to find the standard deviation of this data set. What does the standard deviation tell you about this data? (20 points)

Step-by-step explanation:

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Find the probability for choosing a letter at random from the word: PROBABILITY
kicyunya [14]
1/11
<span>1/11
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3 0
3 years ago
What is 8 divided by 1/2
patriot [66]

Answer:

16

Step-by-step explanation:

8 \div  \frac{1}{2}  = 8 \times  \frac{2}{1}

Because dividing by a fraction is the same thing as multiplying by reciprocal

4 0
2 years ago
Read 2 more answers
2) BRAINLIEST + 10 + POINTS :D
elena55 [62]

Answer:

c) 28

explanation :

In this sequence:

a1 = 2

a2 = 4

a3 = 6

a4 = 8

a5 = 10

and so on...

then

the sum from a2 to a5 is:

a2 +a3 + a4 + a5 = 4 + 6 +8 + 10 = 28

7 0
3 years ago
Guys will someone plzzzzzzz do my ALEKS for me i only need 8 topic honestly if you do 5 thats good enough (plz only answer if u
4vir4ik [10]

Answer:

Is it zoom or what?

Step-by-step explanation:

5 0
2 years ago
Question 3 (Essay Worth 10 points)
elena-14-01-66 [18.8K]

It's not an accurate value for the data based on the scatter plot, r = 0.01 is not an accurate value for this data, because 0.01 means practically no correlation, while the points on the graph are moderately correlated

<h3>How to illustrate the information?</h3>

1. Part A:

Since the points in the scatter plot shows a moderated upward trend, you must expect a correlation coefficient close to ± 0.5. A correlation coefficient of 0.01 is too close to 0, which would mean that the points are almost not correlated at all.

The correlation coefficients, r, measure the strength of the correlation of two variables and they can have values from - 1 to  1.

Here, r = - 1 is a perfect negative correlation as the points will adjust perfectly to a line with a negative slope.

r =  + 1 is a perfect positive correlation: the points will adjust perfectly to a line with a positive slope.

r = 0 means that the variables are not correlated at all.

Hence, the closer to zero, the worse the correlation is, and that is what r = 0.01 means, but the graph shows another thing.

Therefore, the calculated value of r = 0.01 is not accurate for this scatter plot.

2. Part B.

A causal relationship means that the explanatory variable (the independent variable) is the cause of the dependent variable.

Hence, you must find a reasonable variable that can be the cause of the number of strawberries picked.

Thus, the scenario could be:

Amount of rainfall in mm (x)         Number of strawberries picked (y)

      100                                                     20

        50                                                     40

        25                                                     80

        12.5                                                  160

        6.25                                                 320

The amount of rainfall is the cause of the number of strawberries picked, and you could find a model that relates both variables.

Learn more about scatter plot on:

brainly.com/question/6592115

#SPJ1

3 0
1 year ago
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