Abeka 8 Grade Pre-Algebra Test 9

Which of the following equations is in slope - intercept form ?

c

When evaluating an equation , the number substituted into the equation is the

b

Which of the following is a valid list of probabilities ?

C

When only the total number of outcomes for a situation is needed , which of the following methods would be best ?

C

The value of 5 ! is ? 5 ! = ( 5 ) ( 4 ) ( 3 ) 2 ) ( 1 ) = 120

с

What is the correct permutation notation for the number of possibilities for selecting a president , vice president , treasurer , and secretary from a group of 10 students ?

a

Which of the following is usually the most affected by outliers ?

a

Which of the following types of graphs is used to show the change in data over time ?

d

Which of the following types of graphs groups data into classes ?

b

represented by a sector labeled 25 % ? ( 400 ) ( 0.25 ) = 100 people

c

In which quadrant is point C located ?

II

What is the y intercept for line AB ?

( 0 , 6 )

The slope for line AB is ?

b

What type of slope does line CD have ?

d

Using the chart on the right what is the equation for the number of cars each hour ?

a

In a 6 - hour time period , how many cars will have been driven on Oak Street ?

b

mean

7

median

6

mode

4

a number less than 4

3/10

a number not less than 4

7 /10

an even number or a 3

3/5

a 2 and then an even number if the 2 is replaced

1/20

a 2 and then an even number if the 2 is not replaced

2/45

How many data values are in the 20s class ?

4

How many times does the data value 16 occur ?

2

What is the median for the data ?

16

What is wrong with the stem - and - leaf plot ?

no stem for 50s class

Determine the superposition needed

translation

Determine the superposition needed

reflection

Write the notation to transform each solid preimage into each dotted image.

(x , y) —> (y , - x)

Write the notation to transform each solid preimage into each dotted image.

(x , y) —> (x , -y)

What percent of dogs were playing ?

= 67 %

What percent of all animals were playing ?

72 %

What percent of animals playing were dogs ?

= 44 %

By how much do the medians differ ?

4

Whose set of data has the greater range ?

Jared's

What is Emily's five - number summary ?

4-10-16-18-22

How many 16- to 18 - year - olds chose games ?

1,200 - 1,000 = 200

200 people

How many total people chose sports ?

500 + 300 + 600 + 500 = 1,900

1,900 people

Which age group most preferred reading ?

13- to 15 - year olds

Is the association in this graph positive or negative ?

negative

What is the approximate number of pounds of leftovers for the outlier ?

15 pounds

Using the trend line , approximately how many pounds of leftovers would you expect if 15 people attended the potluck dinner ?

14 pounds