Thursday, October 11, 2007

all kinds of students

What kind of students do you have? Identifying them is never easy. And another thing, as good teachers, are we great students?

Monday, October 8, 2007

mean or median? part 2

What's the difference between mean and median?

median (n.) The midpoint of the range numbers that are arranged in order of value.

mean or median?

What's the difference between mean and median?

mean (mēn) v., meant (mĕnt), mean·ing, means.

[transitive verb]
1. To be used to convey; denote: “‘The question is,’ said Alice, ‘whether you can make words mean so many different things’” (Lewis Carroll).
2. To act as a symbol of; signify or represent: In this poem, the budding flower means youth.
3. To intend to convey or indicate: “No one means all he says, and yet very few say all they mean, for words are slippery and thought is viscous” (Henry Adams).
4. To have as a purpose or an intention; intend: I meant to go running this morning, but I overslept.
5. To design, intend, or destine for a certain purpose or end: a building that was meant for storage; a student who was meant to be a scientist.
6. To have as a consequence; bring about: Friction means heat.
7. To have the importance or value of: The opinions of the critics meant nothing to him. She meant so much to me.v.intr.

[intransitive verb]
To have intentions of a specified kind; be disposed: They mean well but lack tact.

idiom:
mean business
Informal.
To be in earnest.
[Middle English menen, from Old English mǣnan, to tell of.]

mean (mēn) adj., mean·er, mean·est.
1. Selfish in a petty way; unkind.
2. Cruel, spiteful, or malicious.
3. Ignoble; base: a mean motive.
4. Miserly; stingy.
5. Low in quality or grade; inferior.
6. Low in value or amount; paltry: paid no mean amount for the new shoes.
7. Common or poor in appearance; shabby: “The rowhouses had been darkened by the rain and looked meaner and grimmer than ever” (Anne Tyler).
8. Low in social status; of humble origins.
9. Humiliated or ashamed.
10. In poor physical condition; sick or debilitated.
11. Extremely unpleasant or disagreeable: The meanest storm in years.
Informal. Ill-tempered.

Slang.
1. Hard to cope with; difficult or troublesome: He throws a mean fast ball.
2. Excellent; skillful: She plays a mean game of bridge.
[Middle English, from Old English gemǣne, common.]
SYNONYMS mean, low, base, abject, ignoble, sordid. These adjectives mean lacking in dignity or falling short of the standards befitting humans. Mean suggests pettiness, spite, or niggardliness: “Never ascribe to an opponent motives meaner than your own” (J.M. Barrie). Something low violates standards of morality, ethics, or propriety: low cunning; a low trick. Base suggests a contemptible, mean-spirited, or selfish lack of human decency: “that liberal obedience, without which your army would be a base rabble” (Edmund Burke). Abject means brought low in condition: abject submission; abject poverty. Ignoble means lacking noble qualities, such as elevated moral character: “For my part I think it a less evil that some criminals should escape than that the government should play an ignoble part” (Oliver Wendell Holmes, Jr.). Sordid suggests foul, repulsive degradation: “It is through art . . . that we can shield ourselves from the sordid perils of actual existence” (Oscar Wilde).

mean (mēn) n.
1. Something having a position, quality, or condition midway between extremes; a medium.
2. Mathematics.
3. A number that typifies a set of numbers, such as a geometric mean or an arithmetic mean.
4. The average value of a set of numbers.
5. Logic. The middle term in a syllogism.
means (used with a sing. or pl. verb) A method, a course of action, or an instrument by which an act can be accomplished or an end achieved.
means (used with a pl. verb)
6. Money, property, or other wealth: You ought to live within your means.
Great wealth: a woman of means.adj.
Occupying a middle or intermediate position between two extremes.
Intermediate in size, extent, quality, time, or degree; medium.idioms:
by all means
Without fail; certainly.by any means
In any way possible; to any extent: not by any means an easy opponent.by means of
With the use of; owing to: They succeeded by means of patience and sacrifice.by no means
In no sense; certainly not: This remark by no means should be taken lightly