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JulijaS [17]
2 years ago
15

Which of the following scatterplots would have a trend line with a positive slope?

Mathematics
1 answer:
IRINA_888 [86]2 years ago
6 0

Answer:

I think it will be the first one because as we can see the points are going up which tells us the line would be positive.

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Of the statistical processes we have covered throughout this course, which would be most helpful to determine if study hours and
Alika [10]

Answer:

Pearson correlation coefficient

Explanation:

The Pearson correlation coefficient, also simply called correlation coefficient measures the linear correlation between two sets of data/variables, independent variables and dependent variable. A correlation coefficient may only be between -1 and 1 where +1 denotes a perfect positive correlation between variables(both variables increase together), 0 is no correlation, and -1 is perfect negative correlation between variables(one decreases while other increases).

5 0
2 years ago
a) In a simple random sample of 1000 faculty taken among all universities in a country, the number of papers published by the in
larisa86 [58]

Answer:

According to the Central Limit theorem, the distribution is roughly normal

Step-by-step explanation:

The Central Limit Theorem states that for sample sizes above 30 and not withstanding population distribution's shape, the sampling distribution of the sample mean becomes more similar t hat of a normal distribution as the sample size increases;

The size of the sample = 1,000 >> 30

As the sample size approaches infinity, we have;

z=\dfrac{\bar{x}-\mu }{\dfrac{S.D.}{\sqrt{n}}}

\overline x = 1.5

S.D. = 1.8

n = 1000

Assume μ = 1, we get;

P(x > 1.1):z=\dfrac{1.1-1 }{\dfrac{1.8}{\sqrt{1000}}} = 1.7568

P(z > 1.7568) = 1 - 0.96080 = 0.0392

Therefore, it is very likely that the mean of the population is not larger than the sample mean

Therefore, yes, the Central Limit Theorem say that the distribution of the number of papers published by the individual sampled faculty in the past year is roughly normal

7 0
3 years ago
In the two diagrams, all the triangles weigh the same and all the squares weigh the same.
dimulka [17.4K]

Answer:

1. A triangle weighs more than a square.

2. A triangle could weigh more than a circle.

3. A triangle cannot possibly weigh more than 4 squares and a circle.

4 0
3 years ago
Substituting y = –2 back into the first equation gives
Elenna [48]

Answer: idk the first equation

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Help pleaseeeeeeeeeeeee
Tanzania [10]

Answer:

B.$120

Step-by-step explanation:

find 8 on the bottom, and go up until you find the dot. then look to the left to see what number matches it on the left side.

7 0
1 year ago
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