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Mathematics 15 Online
OpenStudy (henrietepurina):

Sarah described the following situation: When more apples grew in the backyard, the pet cat stayed indoors for a longer time. Which of the following best describes the situation?

OpenStudy (henrietepurina):

This is an example of correlation but not causation. This is an example of causation but not correlation. This is an example of both correlation and causation. This is an example of neither correlation nor causation.

OpenStudy (mitu12):

b

OpenStudy (henrietepurina):

how do you know?

OpenStudy (mitu12):

because it shows cause and effect and doesnt show a relation

OpenStudy (henrietepurina):

ok Ill believe you

OpenStudy (mitu12):

what do you think the answer is

OpenStudy (henrietepurina):

I thought it was B im not lying

OpenStudy (henrietepurina):

can you help on another?

OpenStudy (mitu12):

you were right then

OpenStudy (henrietepurina):

awsome :) but you helped :)

OpenStudy (mitu12):

glad you understand

OpenStudy (henrietepurina):

awsome so can you help with another?

OpenStudy (mitu12):

yes

OpenStudy (henrietepurina):

The following data show the prices of different types of hot dogs at a store: $6, $8, $7, $6, $5, $7, $5, $7, $6, $28, $30 Which statement is correct about the box plot for the above data?

OpenStudy (henrietepurina):

The box plot will have its right tail longer than the left tail because a few exceptionally high prices make the distribution skewed to the right. The box plot will have its right tail longer than the left tail because a few exceptionally high prices make the distribution skewed to the left. The box plot will have its left tail longer than the right tail because a few exceptionally high prices make the distribution skewed to the right. The box plot will have its left tail longer than the right tail because a few exceptionally high prices make the distribution skewed to the left.

OpenStudy (henrietepurina):

@mitu12

OpenStudy (mitu12):

whats the directions

OpenStudy (henrietepurina):

umm... everything is there :o

OpenStudy (mitu12):

i see now

OpenStudy (henrietepurina):

ok :)

OpenStudy (mitu12):

the first one

OpenStudy (henrietepurina):

proof? sorry I have to do this :(

OpenStudy (henrietepurina):

oh no sorry I believe you

OpenStudy (henrietepurina):

i checked myself

OpenStudy (mitu12):

a skewed distribution is one in which the mean gets pulled away from the median/mode. outliers skew the mean. a long right tail skews the mean to the right.

OpenStudy (mitu12):

ok

OpenStudy (henrietepurina):

do you mind helping on a few more? if not then just tell me :)

OpenStudy (mitu12):

ill help

OpenStudy (henrietepurina):

yay

OpenStudy (henrietepurina):

Henry collected data on the favorite type of food of the students of two grades. The table below shows the relative frequencies of rows for the data collected: Burger Sandwich Noodles Total Grade 8 0.50 0.10 0. 40 1.00 Grade 9 0.53 0.20 0.27 1.00 Total 0.36 0.32 0.32 1.00 Based on the data, which statement is most likely correct?

OpenStudy (henrietepurina):

In Grade 9, 53 students liked burgers. In Grade 9, 73% of students liked noodles. In Grade 8, 40% of students liked noodles. In Grade 8, 10 students liked sandwiches.

OpenStudy (henrietepurina):

whoops messed up a bit the 40 in noodles is supposed to be a 0.40

OpenStudy (mitu12):

ok

OpenStudy (henrietepurina):

oh wait this is too easy the answer is C right?

OpenStudy (mitu12):

yes

OpenStudy (henrietepurina):

then just help me with another one ok?

OpenStudy (mitu12):

sure

OpenStudy (henrietepurina):

The function below models the correlation between the number of hours a plant is kept in sunlight (x) and the height (y), in mm, to which it grows: y = 4 + 2x What does the slope of this function represent?

OpenStudy (henrietepurina):

The original height of the plant was 4 mm. The original height of the plant was 2 mm. The height of the plant increases by 2 mm for every hour of sunlight it receives. The height of the plant increases by 4 mm for every hour of sunlight it receives.

OpenStudy (mitu12):

C. it's in the form y = mx + b where m is the slope

OpenStudy (henrietepurina):

ok thanks

OpenStudy (henrietepurina):

ok so other ones will have graphs ok :)

OpenStudy (mitu12):

ok no problem

OpenStudy (henrietepurina):

A company pays its employees a fixed base salary and a commission based on sales. The scatter plot shows the total earning of an employee of the company (y) based on sales (x): ILL PUT THE GRAPH IN NOW Which function best represents the data in the scatter plot? y = 0.1x + 10 y = 0.1x - 10 y = 0.1x + 1 y = 0.2x - 1

OpenStudy (henrietepurina):

OpenStudy (mitu12):

ok

OpenStudy (mitu12):

a

OpenStudy (henrietepurina):

ill believe you

OpenStudy (mitu12):

i can explain if you want me to

OpenStudy (henrietepurina):

no thats fine... next one ;)

OpenStudy (mitu12):

ok

OpenStudy (mitu12):

can you close this question and start a new one

OpenStudy (mitu12):

its fine if you cant

OpenStudy (henrietepurina):

no I can :)

OpenStudy (mitu12):

thank you

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