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Tomtit [17]
3 years ago
10

The weight Lucy lost with respect to number of weeks was recorded for six weeks. The correlation coefficient was calculated to b

e r = 0.0502. Interpret the meaning of the correlation coefficient in terms of the scenario.
There is a weak, negative correlation between the weight Lucy lost and the number of weeks.
There is no correlation between the weight Lucy lost and the number of weeks.
There is a strong, positive correlation between the weight Lucy lost and the number of weeks.
There is a weak, positive correlation between the weight Lucy lost and the number of weeks.
There is a strong, negative correlation between the weight Lucy lost and the number of weeks.
Advanced Placement (AP)
1 answer:
Aleonysh [2.5K]3 years ago
8 0

Answer: There is a weak, positive correlation between the weight Lucy lost and the number of weeks.

Explanation:

The correlation coefficient is used to measure the relationship between two variables in terms of how they move in relation to one another.

If two variables are said to have a positive correlation, it means that they increase at the same time and decrease at the same time for example, there is a positive correlation between the amount of food a family buys and how much money they have because the more money they have, the more food they buy.

Negative correlations are the reverse for instance Ice cream sales and cold temperatures. The colder it is, the less people buy ice cream.

The Correlation coefficient ranges from -1 to +1 with +1 (-1) meaning that the variables are perfectly positively(negatively) correlated. The closer the value is to 0, the weaker the correlation.

Generally, for a correlation coefficient between the numbers 0 and +0.3, there is a weak positive correlation.

With a correlation coefficient of 0.0502, there is therefore a weak, positive correlation between the weight Lucy lost and the number of weeks.

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6 0
3 years ago
The graph below shows the decline in the catch of groundfish (such as cod, haddock and flounder) from Georges Bank between 1965-
hoa [83]

Answer:

Approximately 22,000 metric tonnes of fish per year

Explanation:

From the graph,

Rate of decline :

(metric tonnes of fish in 1965 - metric tonnes of fish in 1995) / range of years

(700,000 - 40,000)metric tonnes ÷ (1995 - 1965)

660,000 metric tonnes ÷ 30 years

660,000 / 30

= 22,000 metric tonnes per year

Approximately 22,000 metric tonnes of fish per year

3 0
3 years ago
Which of the following is most likely to produce a destabilizing effect that results in uncontrolled growth
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3 0
3 years ago
Ann makes (4x+3) an hour and she worked (2x-1) hours this week. Write an expression that represents the amount of money Ann earn
Lesechka [4]
Amount of money Ann earned this week = Amount of money earned in 1hour × Number of Hours she worked

Amount of money Ann earned this week = (4x + 3) × (2x - 1)
= (4x + 3) (2x - 1)
{Draw lines like rainbows to let yourself know which numbers to multiply by}
= (4x × 2x) + [4x × (-1)] + (3 × 2x) + [3 × (-1)]
{Always remember to put in the negative signs if the number if negative}
= 6x^2 + (-4x) + 6x + (-3)
= 6x^2 - 4x + 6x - 3
{Simplify}
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7 0
3 years ago
Okay I’m stuck on a long equation that may seem hard for you guys to answer, but could you please still try to help me? :)
klemol [59]

Answer:

0

.

1

⋅

7

+

0

.

2

⋅

6

+

−

0

.

8

2

Solve

1

Multiply the numbers

0

.

1

⋅

7

+

0

.

2

⋅

6

+

−

0

.

8

2

0

.

7

+

0

.

2

⋅

6

+

−

0

.

8

2

2

Multiply the numbers

3

Divide the numbers

4

Add the numbers

Solution

1.5

Explanation:

1.5 I believe

6 0
3 years ago
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