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rewona [7]
3 years ago
6

Identify the level of measurement of the data, and explain what is wrong with the given calculation.In a set of​ data, mood leve

ls are represented as 0 for bad, 1 for OK, and 2 for good. The average​ (mean) of the 637 mood levels is 0.9.
Mathematics
1 answer:
JulijaS [17]3 years ago
6 0

Answer:

Level of measurement=ordinal level

Average mean cannot be calculated for ordinal type of data.

Step-by-step explanation:

The level of measurement for mood levels is ordinal level because there is ordering in the data. It means that 0,1,2 represents the ranking of mood level from bad to good.

Furthermore, the average calculated for mood level 0.9 doesn't meaningfully represents the data. The average can't be interpreted in the context.

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The ratio of girls to boys in a class is 3:5 what fraction of the class are girls?
Wewaii [24]

Answer:

Hello!!

If the ratio of girls to boys in a class is 3:5, the fraction of the class that are girls is...

\frac{3}{5}

Hope this helps!!

8 0
3 years ago
Are these correct? ILL MARKYOU AS BRAINLIEST
Soloha48 [4]

Answer:

It definitely seems right, so you should be good!

<h2><u></u></h2><h2><u>Hope This Helped!</u></h2>

3 0
3 years ago
According to a recent study of 7335 young people in the US, 30% had been arrested for a crime other than a traffic violation by
victus00 [196]

Answer:

a) Statistic.

b) The population proportion is expected to be between 0.29 and 0.31 with a 94% degree of confidence.

Step-by-step explanation:

a) The proportion of 30% is a statistic, as it is a value that summarizes data only from the sample taken in the study from USA Today. Other samples may yield different proportions.

b) We can use the statistic to estimate a confidence interval for the parameter of the population.

The standard error for the proportion is calculated as:

\sigma_p=\sqrt{\dfrac{p(1-p)}{N}}=\sqrt{\dfrac{0.3\cdot 0.7}{7335}}=\sqrt{2.83\cdot10^5}= 0.00535

The margin of error is 0.01. We can use this value to determine the level of confidence that represents.

The formula for the margin of error is:

E=z\cdot \sigma_p=0.01\\\\z\cdot 0.0535=0.01\\\\z=1.87

This z-value, according to the the standard normal distribution, corresponds to a confidence interval of 94%.

The interval for this margin of error is:

p-E\leq \pi \leq p+E\\\\0.30-0.01\leq \pi \leq 0.30+0.01\\\\0.29\leq \pi \leq 0.31

Then, we can conclude that the population proportion is expected to be between 0.29 and 0.31 with a 94% degree of confidence.

3 0
3 years ago
What is the slope of the parallel line to 6x + 3y=-6
Artyom0805 [142]

Answer:

-2

Step-by-step explanation:

6x+3y=-6

-6-6x=3y

divided by 3

-2-2x=y

6 0
3 years ago
HELP!!!!<br> What are the three ways to create samples spaces of all outcomes?
Kisachek [45]

Answer:

The three most common ways to find a sample space are: To List All the Possible Outcomes. Create a Tree-Diagram. Use a Venn Diagram.  

For example, let's suppose we flip a coin and roll a die.

1. How many outcomes are possible?

2. What is the probability space?

3. Identify the events.

Step-by-step explanation:

sorry

7 0
2 years ago
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