Download Section 1.11-1.8_Ans_Practice Quiz_ (09

Practice QUIZ – SECTION 1.7 & 1.11
Name
Date
Period
Identify each arithmetic or geometric sequence by examining the numbers and
finding the pattern.
1.
-7, -2, 3, 8, ___, ___, ___, ___, …
a. Type of sequence:
Arithmetic Sequence
b. Extend the sequence: -7, -2, 3, 8, _13, _18__, _23__, _28__, …
c. Write the rule: Start with
start with -7 and add 5 repeatedly
2. 6250, 1250, 250, 50, ___, ___, ___, ___, …
a. Type of sequence:
Geometric Sequence
b. Extend the sequence: 6250, 1250, 250, 50, _10__, _2__, _.4__, _.08__, …
c. Write the rule: Start with
start with 6250 and divide by five repeatedly
3. 0.7, -0.1, -0.9, -1.7, ___, ___, ___, ___, …
a. Type of sequence:
Arithmetic Sequence
b. Extend the sequence: 0.7, -0.1, -0.9, -1.7, _-2.5__, _-3.3__, _-4.1__, _-4.9__, …
c. Write the rule: Start with
Start with 0.7 and add -0.8 repeatedly
4. -7, 14, -28, 56, -112 ___, ___, ___, ___, …
a. Type of sequence:
b. Extend the sequence: -7, 14, -28, 56, -112 _224__, _-448__, _896__, _-1792, …
c. Write the rule: Start with
Start with -7 and multiply by -2 repeatedly
Plot the point in a coordinate plane. Describe the location of the point.
5. (-7,-1) Quadrant III
6. (-7,-9) Quadrant III
10
7. (0,-4) y-axis
8. (4, 5) Quadrant I
9. (-8,6) Quadrant II
-10
10
10. (0,3) y-axis
-10
11. Use a coordinate plane.
a. Plot the points (0,0), (0,4), (5, 4), (8,2), and (5,0).
Connect the last point to the first point.
b. Identify the figure. Explain your reasoning.
c. Find the area.
T.A.
= A1 +
= lw
A2
+
½ bh
= 5(4) + 1/2 (4)(3)
= 20 + 6
= 26 units2
Connect the points in order.
Pentagon has five sides.
12. Use the variable expression -3x – 1.
a. Evaluate the expression when x = -3, -2, -1, 0, 1, 2, and 3.
b. Use your results from part (a) to write a list of ordered pairs in the form (x, -3x – 1).
c. Plot the ordered pairs (x, -3x – 1) from part (b) in a coordinate plane.
d. Describe what you notice about the points.
-3
8
-2
5
-1
2
0
-1
1
-4
2
-7
3
-10
Choose the correct answer.
13. The number of cans Carl collected for 5 days is shown below. Which measure best
describes the typical number of cans Carl collected.
150, 152, 151, 160, 150
a.
b.
c.
d.
The mean and the mode
The mode and the median
The mean and the median
The mean, median, and mode
14. Willow recorded all of her bowling scores this season. She wants to find out which
score she earned most frequently. Which of the following measures should Alyssa
calculate?
a.
b.
c.
d.
Mean
Median
Range
Mode
15. These are the number of cakes sold each day at a bake sale.
14, 17, 62, 14, 13, 12
Which measure best describes the number of pies sold per Day?
a.
b.
c.
d.
The median only
The mode only
The median and the mode
The range and the mean
16. These prices show how the increase in price of certain cars.
$29,900 $32,600 $33,100 $33,200 $33,300
Which measure best describes the overall increase in the price of the SUV?
a.
b.
c.
d.
The range
The mean
The median
The mode
17. red, orange, red, orange, purple, orange, blue, blue, red, blue, green
Which measure of central tendency best describes the data set?
a.
b.
c.
d.
The range
The mean
The median
The mode
18. Number of miles driven to work
_____Median or mode _____
** There might be an outlier. *** Not on this quiz
19. Favorite type of ice cream __Mode______________________
______This is frequency *** Not on this quiz_______________
Which statement about the graph shown below is true?
20.
y
x
x
a. As the x-coordinate increases, the y-coordinate increases.
b. As the x-coordinate increases, the y-coordinate decreases.
c. As the x-coordinate increases, the y-coordinate stays the same.
d. As the y-coordinate increases, the x-coordinate stays the same.
y
21.
y
x
y
x
y
x
a. As the x-coordinate increases, the y-coordinate increases.
b. As the x-coordinate increases, the y-coordinate decreases.
c. As the x-coordinate increases, the y-coordinate stays the same.
d. As the y-coordinate increases, the x-coordinate stays the same.
22.
y
x
a. y = -x + 1
b. y = -x
c. y = -x - 1
d. y = -x + 1
y
23.
x
y
x
a. y = -½x + 1
b. y = -½x - 1
c. y = ½x + 1
d. y = ½x - 1
Find the mean, median, and mode of the data set below.
Determine any outliers.
State the measure of central tendency which best describes the data.
19. 8, 5, 4, 13, 2, 25, 23, 14, 5
Work Space
Mean
___11______
Mean
= 8+5+4+13+2+25+23+14+5
9
=
11
Median
= 2,4,5,5,8,13,14,23,25
Outliers ___none____
Mode
=
Range ___23______
Outlier
A number much larger or smaller
than the rest of the numbers in the
group. ***Not on this quiz.
25 – 2 = 23
Median ___8_______
Mode
__5________
Range
5