Unit 2 grade 8 spiraled Test REVIEW

Which number set represents Section A in the Venn diagram?

• Rational

• Real

• Integers

• Irrational

A microscopic cell measures 3.8 × 10–4 centimeters in diameter. What is this number in standard decimal notation?

• 12,000,000 = 1.2 × 10⁷

• –74.308 < –0.74 × 10³

• 2 × 10⁴ < 20,000

• 5.3 × 10^–2 = –0.053

Tags

CCSS.8.EE.A.3

A microscopic cell measures 3.8 × 10–4 centimeters in diameter. What is this number in standard decimal notation?

• 12,000,000 = 1.2 × 10⁷

• –74.308 < –0.74 × 10³

• 2 × 10⁴ < 20,000

• 5.3 × 10^–2 = –0.053

Write the following numbers in ascending order.

​​–2 3/8, –0.85, 4/3 , 1 2/5, –8/6, 0.8

• –2 3/8, –8/6, –0.85, 0.8, 4/3 , 1 2/5

• –8/6, –0.85, 0.8, 4/3 , 1 2/5, –2 3/8

• –2 3/8, 1 2/5, 4/3 , 0.8, –0.85, –8/6

• 1 2/5, 4/3 , 0.8, –0.85, –8/6, –2 3/8

Tags

CCSS.6.NS.C.7A

CCSS.6.NS.C.7B

List the numbers in order from GREATEST to LEAST?

• 
• 
• 
• 

Tags

CCSS.8.NS.A.2

Which simulation would not generate a random sample representative of the population from which it was selected?

• Spinning a spinner with 3 equally divided sections to determine students’ favorite day of the week.

• Using a random number generator to generate an identification number for the winner of the school door prize each week throughout the school year.

• Using a computer model to select 3 students to represent the school on the float in the town parade.

• Selecting students’ names out of a bag to serve on the school mascot committee.

DeeAnne wants to survey the 8th grade students at her school to learn their opinions about field trips. Which sampling method is most likely to create a random sample that is representative of the population of 8th grade students at her school?

• Placing the school identification numbers of all 8th grade students in a bag and drawing 15 numbers without looking.

• Selecting the first 3 students from an alphabetized list in every 8th grade class.

• Asking 8th grade students to volunteer for the survey.

• Choosing every 10th student in 8th grade that enters the gym during 4th period.

Angela collected the data displayed in the table below.

Angela’s Data

–8 6.2 2.5 12 –2 –1.3 15 –2 0 7

What is the average distance of these points from the mean of the data?

• 5.688

• 2.94

• 1.25

• 4.59

The track team had 5 students who competed in discus throwing. The table below shows how far each student threw a discus at the last track meet.

What was the students’ average distance away from the mean?

• 5.6 feet

• 0 feet

• 33 feet

• 28 feet

A set value is shown below.

12.7, 22, 23.5, 24, 11, 22

What is the mean absolute deviation of the set of values?

• 4.9

• 0

• 3.966666...

• 19.2