Recent questions in High school statistics

Percentile Rank
Answered

Kolton Rush
2022-12-19

Sample Standard Deviation
Answered

Charlie Glass
2022-12-19

Sample Standard Deviation
Answered

Mollie Wise
2022-12-04

Group of answer choices

The larger the standard deviation, the higher the total risk.

The larger the standard deviation, the lower the total risk.

The standard deviation is not an indication of total risk.

None of these are correct.

Normal distributions
Answered

Brenda Leach
2022-12-01

Gravitational Force

Electromagnetic Force

Buoyant Force

Weak Nuclear Force

Normal distributions
Answered

Scott Valenzuela
2022-11-29

Data distributions
Answered

Marques Flynn
2022-11-27

$x:8,16,24\phantom{\rule{0ex}{0ex}}y:11,22,33$

a. yes; y = 2.75x

b. yes; y = 0.6875x

c. yes; y = 1.375x

d. no; y does not vary directly with x

Sample Standard Deviation
Answered

Talia Frederick
2022-11-26

Mode

Standard deviation

Median

Mean

Sample Standard Deviation
Answered

modnimCYf
2022-11-25

Sample Standard Deviation
Answered

liachta6VW
2022-11-25

Sample Standard Deviation
Answered

agrarismoN07
2022-11-24

a. A 95% confidence interval for $\mu $ will include the value 14.

b. A 95% confidence interval for $\mu $ will include the value 1.

c. A 90% confidence interval for $\mu $ will include the value 1.

d. A 90% confidence interval for $\mu $ will include the value 14.

Study design
Answered

Goundoubuf
2022-11-23

historical past/issues:

My students are generally pretty good at math, but many of them have no longer been uncovered to rigorous or summary mathematical reasoning. an amazing topic would be one that could not be impossibly hard for students who have by no means written or study proofs in English.

i have taught this magnificence three times earlier than. (a part of the purpose that i'm posting that is that i have used up all my thoughts!) the primary semester I taught an introductory range theory elegance (which meandered its way toward a proof of quadratic reciprocity, though I think this become in the end too advanced/abstract for some of the students). the second one semester I taught fundamental graph idea and packages (with a focal point on planarity and coloring). The 1/3 semester I taught a class at the Rubik's dice.

the students' math backgrounds are pretty numerous: a number of them take part in contest math competitions, and so are familiar with IMO-fashion techniques, however many aren't. a number of them may additionally realize some calculus, however I cannot assume it. all of them are superb at what in the united states is on occasion termed "pre-calculus": trigonometry, conic sections, systems of linear equations (though, shockingly, no matrices), and the like. They realize what a binomial coefficient is.

So, any ideas? preferably, i'd like to find some thing a bit "sexy" (like the Rubik's cube) -- tries to encourage wide variety theory through cryptography seemed to fall on deaf ears, however being capable of "see" institution idea on the cube became pretty popular.

(Responses specifically welcome from folks who grew up in the percent -- any mathematical subjects you desire were protected within the excessive college curriculum?)

Study design
Answered

Alvin Parks
2022-11-21

Study design
Answered

Jaiden Elliott
2022-11-19

I am pursuing a B.S in Mathematics(freshman) in a country where people rarely study math for the sake of it and in a new university with good professors. Yet, it is new and I suffer from the lack of peers and it is literally impossible to pick up mathematical conversations on ideas with students . As a result, I find it difficult to exchange ideas with others.

Is there something which can be done to make sure that lack of peers or the pressure to push oneself doesn't harm me much?

Study design
Answered

Uroskopieulm
2022-11-19

Individual weight of the leaves (selecting samples) in the beginning

Individual weight along 4 days

Individual weight in the end

Nutritional composition in the start and in the end

I am remembering my knowledge in stats and R, but I am still lost. My question is, which is the best comparison method to analyse this data? I want to know:

How the humidity content change along the days

To dry this kind of leaves, which drying area is better?

Is it statistical significance between both method about losing water and nutrient content?

Study design
Answered

Sophie Marks
2022-11-19

$(-x{)}^{2}$ is definately equal to $(-1{)}^{2}(x{)}^{2}$, right?

But $-(x{)}^{2}$ and $-{x}^{2}$ are confusing me, do they mean $-({x}^{2})$ or do they mean $(-1{)}^{2}(x{)}^{2}$?

Data distributions
Answered

Kameron Wang
2022-11-18

"We can approximate $p(x,y)=p(x)p(y|x)$ using the empirical data distribution

$p(x,y)=\frac{1}{N}\sum _{n=1}^{N}{\delta}_{{x}_{n}}(x){\delta}_{{y}_{n}}(y)"$

In another part of the paper they say $p(y|{y}_{n})={\delta}_{{y}_{n}}(y)$.

I have some background in probability but none in statistics; I was able to figure out what an Empirical CDF is, but not a pdf like here, so I'm not sure exactly what the authors are doing. Does the $\delta $ refer to the Dirac delta distribution?

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