RCT 1

Reorder the following in steps to find the mean/average of a set of numbers.

• Divide by the number of values in the set

• Round to the nearest cent if it is money

• Add up all the numbers

Reorder the following steps for finding the median

• If there are two in the middle, add them up and divide by 2

• Round the nearest cent

• List the numbers in order from least to greatest (or greatest to least)

• Find the middle number

Gabriela is a professional DJ. She wants to make an essential purchase of an upgraded sound system for her work. She found the following prices from various sellers:

 

$699, $599, $699, $680, $590, $720, $650, $800

Part A: What is the mean price? Round your answer to the nearest cent.

Mathematical Equivalence

ON

Gabriela is a professional DJ. She wants to make an essential purchase of an upgraded sound system for her work. She found the following prices from various sellers:

 

$699, $599, $699, $680, $590, $720, $650, $800

Part B: What is the median price? Round your answer to the nearest cent if needed.

Mathematical Equivalence

ON

Part C: Gabriela believes that purchasing the sound system is an essential purchase. Does that mean buying a sound system is an essential purchase for everyone? Why or why not? Be sure to use the terms “essential” and “discretionary” in your response.

This is a scatter plot of data of years from 2014 until 2020 and Spotify Album Streams in Millions. Describe the relationship by completing the sentence.

There is ___ correlation between the number of Spotify album streams and the year number.

• strong positive

• weak positive

• strong negative

• no

This is a scatter plot of data of years from 2014 until 2020 and Spotify Album Streams in Millions.

Part B: What could be a possible slope of the line? Select all that apply.

• -15

• -9

• 0

• 9

• 15

How does one calculate simple interest?

• Multiply the principal, rate, and number of years

• Multiply the percent and the deposit

• Add up all the checks

• Sit back and let it do it's thing

Match the corresponding time given in a prolem with the correct way to calculate in years

20 days ​ (a)  

10 years​ ​ (b)  

6 months​ (c)  

• Divide by 365
• 10(don't divide)
• divide by 12

Mr. Gray opened a savings account with $1,750 he received from someone. The account pays 4.3% simple interest. What is the amount after 6 months?

Mathematical Equivalence

ON