ShmoopTube

Where Monty Python meets your 10th grade teacher.

Search Thousands of Shmoop Videos


PSAT Videos 97 videos

PSAT 1.1 Math Diagnostic
312 Views

PSAT 1.1 Math Diagnostic. If a rabbit consumes 3 meals a day, how many grams of food will a rabbit consume in 7 days?

PSAT 1.8 Math Diagnostic
211 Views

PSAT 1.8 Math Diagnostic. What is one value of x?

PSAT 1.38 Math Diagnostic
180 Views

PSAT 1.38 Math Diagnostic. What is f(g(x))?

See All

PSAT 1.4 Math Diagnostic 216 Views


Share It!


Description:

PSAT 1.4 Math Diagnostic. Which of the following conclusions is supported by the data in the graph?


Transcript

00:00

Thank you We sneak And here's your shmoop du jour

00:05

brought to you by south africa There are actually not

00:08

as many superheroes living in cape town as you might

00:10

expect Night Check up grab here Which of the following

00:17

conclusions is supported by the data in the graph And

00:20

here the potential answers So what's it asking Well we've

00:26

got four possible conclusions over here but only one of

00:29

them is backed up by the information we've been giving

00:32

The other three can take a flying leap for a

00:34

weekend made up The trick is to figure out which

00:37

three are trying to pull a fast one on us

00:39

let's take them one at a time and see if

00:40

we're buying what they're selling Option b says that as

00:43

chlorophyll increases sea surface temperature increases because they are positively

00:49

correlated That is totally correct on opposite day according to

00:53

the graph As chlorophyll concentration increases sea surface temperature decreases

00:58

that's why is the line moves from left to right

01:00

These numbers here are getting bigger while these were getting

01:03

smaller not unlike our pool of possible answer choices these

01:07

out of here What about c Which suggests that if

01:09

chlorophyll concentration is zero than the sea surface temperature is

01:14

approximately twelve degrees centigrade All right well let's take our

01:17

little finger Actually Any of them will do and find

01:19

the point of the graph at which the concentration of

01:22

chlorophyll is zero right here Looks like that line of

01:25

best fit is hovering A bit over the sixteen degree

01:28

mark which unless mathematicians recently switched it up on us

01:32

is not the same as twelve degrees but we can

01:35

reduce our concentration on choiceseat zero next up is option

01:38

d if the sea surface temperature is less than fourteen

01:40

degrees centigrade the chlorophyll concentration is less than ten well

01:44

here's the part of the graph represented by everything under

01:47

fourteen degrees and if we're to extend our line of

01:49

best bit out of ways we'd see that everywhere it

01:52

falls inside the shaded area the chlorophyll concentration is more

01:56

than ten not less so this option is a shady

01:59

is so new graph will next d answer is the

02:02

right choice If the sea surface temperature is fifteen degrees

02:06

centigrade or phil concentration is likely to be between eight

02:09

point zero and eight point five Yeah here's fifteen degrees

02:13

right along this axis and if we go straight across

02:15

to the line of best fit yet that totally falls

02:18

somewhere between a chlorophyll concentration of between eight and eight

02:21

point five we're really glad we got the right answer

02:24

but we're going to take a break now and lie

02:26

down for a bit Some reason we're seeing dot home

Related Videos

PSAT 1.1 Reading Diagnostic
1006 Views

PSAT 1.1 Reading Diagnostic. The main purpose of the first two paragraphs is to...what?

PSAT 2.2 Reading Diagnostic
379 Views

PSAT 2.2 Reading Diagnostic. What is the main rhetorical effect of this phrase in the second paragraph?

PSAT 1.3 Writing Diagnostic
282 Views

PSAT 1.3 Writing Diagnostic. To make the paragraph most logical, sentence 2 in the second paragraph should be placed...where?

PSAT 1.4 Writing Diagnostic
239 Views

PSAT 1.4 Writing Diagnostic. Which choice most effectively combines the two sentences in the underlined portion?

PSAT 1.5 Writing Diagnostic
239 Views

PSAT 1.5 Writing Diagnostic. How should the underlined portion be changed in the passage, if at all?