answersLogoWhite

0

🎒

Statistics

Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.

36,755 Questions

How do u calculate mean absolute deviation?

  • You calculate the mean.
  • For each observation, you calculate its deviation from the mean.
  • Convert the deviation to absolute deviation.
  • Calculate the mean of these absolute deviations.

What are all the possible combinations if there are 65 numbers?

It depends on how many numer combinations you are looking for. If you are looking at combinations of any size, the answer is 265 which includes the null combination - the combination of no numbers out of 65.

What is the difference between declaring variable and initializing variables?

Actually, there is a third step, call definition.

Declaration is a statement to the compiler of what type an identifier is, definition is the allocation of memory for that identifier, and initialization is the assignment of an initial value to that identifier. Usually, declaration and definition are done together, but you can also add initialization in that step if desired.

int a; /* declaration and definition */

a = 1; /* initialization */

int a = 1; /* declaration, definition, and initialization */

For the case of seperate declaration and definition, consider the struct...

struct _mystruct { int a; }; /*declaration */

struct _mystruct mystruct; /* definition */

struct _mystruct { int a; } mystruct; /*declaration and definition */

Note: To be more precise:

struct _mystruct; /* struct declaration */

struct _mystruct { int a; }; /* struct definition */

typedef struct _mystruct MYTYPE; /* type definition */

extern struct _mystruct mystructvar; /* variable declaration */

struct _mystruct mystructvar; /* variable definition */

struct _mystruct mystructvar = {7} ; /* variable definition with initialization */

struct _mystruct { int a; } mystruct; /* struct definition and variable definition */

extern struct _mystruct { int a; } mystruct; /* struct definition and variable declaration */

How many times does the digit 2 appear in the numbers from 10 to 100?

The easiest way to do this is to break this into cases:

Case 1: Number Starts with 2 (20-29).

20, 21, 22, 23, 24, 25, 26, 27, 28, 29

n = 11 (it's 11, because 22 has the number twice)


Case 2: Number ends with 2 (12, 32, 42... )

12, 32, 42, 52, 62, 72, 82, 92
n = 8 (we skipped 22, because we counted it in case 1)


11 + 8 = 19


2 appears 19 times from 10 to 100

What is cumulative learning?

Cumulative learning is an educational approach where knowledge and skills are built progressively over time, with each new concept or skill adding to the learner's existing understanding. This method emphasizes the interconnectedness of information, allowing learners to deepen their comprehension and retain knowledge more effectively. By revisiting and expanding upon previously learned material, cumulative learning fosters a continuous and integrated learning experience. This approach is often used in curricula that emphasize mastery and application of concepts across subjects.

What percent of 110 is 44?

48.4 is 44% of 110. I got this by multiplying 110 by 0.44, which is the decimal representation of 44.

Can you approximate a handicap when all you have played is a 9 hole executive course 1603 yds and a par 30 with an average score of 46?

HandicapYour handicap would be 8

No, it definitely would not be an 8. First of all, yes, you can extrapolate a standard handicap from play on an executive course. The formula for calculating an exact handicap is a bit complicated, involving both the rating and slope of the courses played. However, in the case cited, the golfer is 16 over par for 9 holes. The computed handicap would be closer to 30-32.

What is the sample size if in theory 19 out of 20 cases the results from a poll should differ by no more than 1 percent in either direction from what would have been obtained by polling all Americans?

Your confidence level is 19/20=95%
1% is your margin of error
'either direction' means it's two-sided

Sample size, n, should be larger than (zalpha/2)2p(1-p)/m2

where

zalpha/2 is the upper critical value of the normal distribution. For your level of confidnce (95%) alpha=0.05. So alpha/2=0.025, making z=1.96

p is your 'best guess' about the true value of the proportion. You can estimate with a pilot study, or set to 50% which will maximise the sample size possibly much larger than required.

m is your margin of error (1%)

So choose a sample size of n>=(1.96)2*(0.5)2/0.012=9604

However, this will result in a test with only 50% power (i.e. probability of not getting a false negative is 50%). Typically power is set to around 80%. To increase power the sample size would have to be even larger.

What does katon mean?

I'm not so sure. All I know is that in the show and manga "Naruto," katon means "fire style."

Katon in Portuguese is Cattaono

I shoould kno kuz my name is Tim Katon

How do you convert grams per square centimeter into grams per square meter?

1 m = 100 cm so 1 sq m = 1 m * 1 m = 100 cm * 100 cm = 10,000 sq cm. Multiply the gms/sqcm figure by 10,000 to get gms/sq metre.

What volcanic land feature has helped the east and west coast of north America grow bigger?

Volcanic hotspots like the one under Yellowstone National Park in the western United States have contributed to the growth of land on the west coast through volcanic activity. This process, known as volcanic land deposition, has added layers of volcanic rock and land to the coastline. Similarly, the volcanic activity along the Mid-Atlantic Ridge has contributed to the growth of land on the east coast through the formation of new oceanic crust and volcanic islands.

How is a sample is termed if it has similar characteristics to the population being studied.?

what is the type of sample in which each member of the sample set or group has an equal chance of being chosen

What is the difference between a stock variable and a flow variable?

A stock variable is measured at one specific time, and represents a quantity existing at that point in time (say, December 31, 2004), which may have accumulated in the past. A flow variable is measured over an interval of time. Therefore a flow would be measured per unit of time (say a year). Flow is roughly analogous to rate or speed in this sense

How do you find center of short radius elbow?

ow can i know the radius of short radius elbow 45 & 90

How many 5-number combinations are there for numbers 1-35?

If the order matters, then there are (35 x 34 x 33 x 32 x 31) = 38,955,840 possibilities.

If the order doesn't matter, then there are 38955840 / (5 x 4 x 3 x 2) = 324,632 possibilities.

In other words, your chance of winning is about the same whether you buy a ticket or not.