Question 1

A spinner has numbers 1-7 marked equally on the face. If the spinner is spun 4 times, what is the probability of getting a 6, a 5, a 1 and a 4?

Accepted Answer

A)  $\frac { 1 } { 2,399 }$ 
B)  $\frac { 1 } { 2,401 }$ 
C)  $\frac { 1 } { 2,406 }$ 
D)  $\frac { 1 } { 2,404 }$ 
E)  $\frac { 1 } { 2,394 }$ 
A)  $\frac { 1 } { 2,399 }$ 
B)  $\frac { 1 } { 2,401 }$ 
C)  $\frac { 1 } { 2,406 }$ 
D)  $\frac { 1 } { 2,404 }$ 
E)  $\frac { 1 } { 2,394 }$

Question 2

Draw a circle graph. In the United States for 2000, the percentage of national household income by quintiles was as follows: 1st, 4%; 2nd, 17.1%; 3rd, 36.7%; 4th, 24.4%; 5th, 17.8%.

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 3

In one month, the sales of calculators were as follows:   $$\begin{array} { l l r l } 
\text { Brand } A : & 31 & \text { Brand } D : & 78 \
\text { Brand } B : & 56 & \text { Brand } E : & 42 \
\text { Brand } C : & 14 &
\end{array}$$ What central angle of a circle graph would show Brand B's sales as a percent of the total sales for the month?
Round your answer to the nearest tenth.

Accepted Answer

A)  106.2o 
B)  99.2o 
C)  91.2o 
D)  83.2o 
E)  73.2o 
A)  106.2o 
B)  99.2o 
C)  91.2o 
D)  83.2o 
E)  73.2o

Question 4

Find the sample standard deviation from the set of measurements below. $47.68 \mathrm {~cm} , 48.25 \mathrm {~cm} , 47.99 \mathrm {~cm} , 47.86 \mathrm {~cm}$

Accepted Answer

A)  $s = 0.13 \mathrm {~cm}$ 
B)  $s = 0.26 \mathrm {~cm}$ 
C)  $s = 0.21 \mathrm {~cm}$ 
D)  $s = 0.18 \mathrm {~cm}$ 
E)  $s = 0.27 \mathrm {~cm}$ 
A)  $s = 0.13 \mathrm {~cm}$ 
B)  $s = 0.26 \mathrm {~cm}$ 
C)  $s = 0.21 \mathrm {~cm}$ 
D)  $s = 0.18 \mathrm {~cm}$ 
E)  $s = 0.27 \mathrm {~cm}$

Question 5

A technician is often asked to read graphs drawn by a machine. The machine records measurements by plotting them on a graph. Any field in which quality control or continuous information is needed might use this way of recording measurements. The figure labeled "Microbarograph (Atmospheric pressure in inches)" shows a microbarograph used by the weather service to record atmospheric pressure in inches. When was the highest atmospheric pressure recorded?(Select the day.)

Accepted Answer

A)  Friday 
B)  Wednesday 
C)  Thursday 
D)  Saturday 
E)  Tuesday 
A)  Friday 
B)  Wednesday 
C)  Thursday 
D)  Saturday 
E)  Tuesday

Question 6

Use the figure below to answer the following question.   Between what two decibel readings is the least change in power output found? (Hint: assume that db readings were taken at the following points: 18, 20, 22, 24, 26, 28, 30, 32)

Accepted Answer

A)  24 db and 26 db 
B)  20 db and 22 db 
C)  22 db and 24 db 
D)  30 db and 32 db 
E)  20 db and 26 db 
A)  24 db and 26 db 
B)  20 db and 22 db 
C)  22 db and 24 db 
D)  30 db and 32 db 
E)  20 db and 26 db

Question 7

Find the median measurement for the set of measurements. $3,185$ ; $448 \overline { 0 }$ ; $2,961$ ; $7,638$ ; $1,189$ ; $6,653$ ; $2,168$ ; $8,191$ ; $5,103$ ; $9,665$ ; $5,108$ ; $6,208$ ; $1,988$ ; $4,037$ ; $1,205$ ; $3,208$ ; $4,696$ ; $3,309$ ; $7,227$

Accepted Answer

A)  $1,189$ 
B)  $4,480$ 
C)  $4,430$ 
D)  $7,638$ 
E)  $2,961$ 
A)  $1,189$ 
B)  $4,480$ 
C)  $4,430$ 
D)  $7,638$ 
E)  $2,961$

Question 8

Find the median measurement for the set of measurements. $203 \overline { 0 }$ , $1,955$ , $2,135$ , $2,238$ , $2,147$ , $1,869$ , $1,999$ , $1,784$

Accepted Answer

A)  $1,901.5$ 
B)  $2,214.5$ 
C)  $1,771.5$ 
D)  $2,014.5$ 
E)  $2,385.5$ 
A)  $1,901.5$ 
B)  $2,214.5$ 
C)  $1,771.5$ 
D)  $2,014.5$ 
E)  $2,385.5$

Question 9

Draw a histogram for the data displayed in the following frequency distribution.   $$\begin{array} { | l c | } 
\hline \text { Interval } & \text { Frequency t} \
\hline 41.5 - 48.5 & 11 \
48.5 - 55.5 & 18 \
55.5 - 62.5 & 23 \
62.5 - 69.5 & 25 \
69.5 - 76.5 & 5 \
76.5 - 83.5 & 2 \
\hline
\end{array}$$

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 10

The life expectancy of a fluorescent light bulb is given by the number of hours that it will burn. From the following frequency distribution, find the sample standard deviation of life of this type of bulb.
  $$\begin{array} { | l | l | l | l | } 
\hline \text { Life of bulb (hours) } & \text { Midpoint } x & \text { Frequency } f & \text { Product } x f \
\hline -0.5 - 499.5 & & 4 & \
\hline 499.5 - 999.5 & & 11 & \
\hline 999.5 - 1,499.5 && 13 & \
\hline 1,499.5 - 1,999.5 && 19 & \
\hline 1,999.5 - 2,499.5 && 28 & \
\hline 2,499.5 - 2,999.5 & & 34 & \
\hline 2,999.5 - 3,499.5 & & 13 & \
\hline 3,499.5 - 3,999.5 & & 3 & \
\hline
\end{array}$$ Please round your answer to the nearest whole number, if necessary.
__________ h

Accepted Answer

The answer of The life expectancy of a fluorescent light...

Question 11

Consider the following bar graph. What is the total number of barrels of oil per day used by all the countries listed?   __________ million barrels

Accepted Answer

The answer of Consider the following bar graph. What is...

Question 12

Find the mean measurement for the set of measurements. 21, 53, 76, 46, 63, 26, 55, 82, 97, 36, 12

Accepted Answer

A)  52 
B)  208 
C)  46 
D)  37 
E)  572 
A)  52 
B)  208 
C)  46 
D)  37 
E)  572

Question 13

Find the mean measurement for the set of measurements. 0.019, 0.118, 0.059, 0.198, 0.228, 0.182, 0.227, 0.331, 0.534, 0.344, 0.197, 0.254

Accepted Answer

A)  0.300 
B)  2.691 
C)  0.022 
D)  0.224 
E)  0.174 
A)  0.300 
B)  2.691 
C)  0.022 
D)  0.224 
E)  0.174

Question 14

The following list gives 50 pieces of ranked data (ranked from smallest to largest). Find the 7th percentile.

$\begin{array}{ | c  | } 
\hline  { \text { Ranked data } } \
\hline\begin{array}{lllll}
12 & 48 & 82 & 123 & 148 \
19 & 53 & 85 & 123 & 148 \
22 & 55 & 89 & 126 & 153 \
24 & 56 & 98 & 130 & 154 \
31 & 58 & 102 & 130 & 159 \
33 & 66 & 103 & 131 & 161 \
36 & 66 & 105 & 136 & 166 \
38 & 74 & 109 & 140 & 166 \
44 & 78 & 116 & 143 & 172 \
47 & 78 & 121 & 146 & 175\
\end{array}\
\hline
\end{array}$

Accepted Answer

A)  12 
B)  38 
C)  19 
D)  24 
E)  55 
A)  12 
B)  38 
C)  19 
D)  24 
E)  55

Question 15

Find the sample standard deviation from the set of measurements below. Please round your answer to the nearest ten thousandth. $0.2613 \text { in., } 0.2615 \text { in., } 0.2622 \text { in., } 0.2680 \text { in., } 0.2612 \text { in., } 0.2611 \text { in. }$

Accepted Answer

A)  $S = 0.0025 \text { in. }$ 
B)  $S = 0.0027 \text { in. }$ 
C)  $S = 0.0021 \text { in. }$ 
D)  $S = 0.0028 \text { in. }$ 
E)  $S = 0.0026 \mathrm { in } .$ 
A)  $S = 0.0025 \text { in. }$ 
B)  $S = 0.0027 \text { in. }$ 
C)  $S = 0.0021 \text { in. }$ 
D)  $S = 0.0028 \text { in. }$ 
E)  $S = 0.0026 \mathrm { in } .$

Question 16

Two dice are rolled. What is the probability of getting two 5s?

Accepted Answer

A)  $\frac { 1 } { 36 }$ 
B)  $\frac { 1 } { 31 }$ 
C)  $\frac { 1 } { 39 }$ 
D)  $\frac { 1 } { 38 }$ 
E)  $\frac { 1 } { 29 }$ 
A)  $\frac { 1 } { 36 }$ 
B)  $\frac { 1 } { 31 }$ 
C)  $\frac { 1 } { 39 }$ 
D)  $\frac { 1 } { 38 }$ 
E)  $\frac { 1 } { 29 }$

Question 17

A sporting goods manufacturer makes baseballs. The target mass of a baseball is 145.5 grams with a standard deviation of ±3.5 grams. A technician selects 100 baseballs at random per hour and records the mean mass of the samples. The table below lists the mass in grams for a 36 hour period.
Determine the most accurate mean control chart drawn from the data shown in the table.
  $\begin{array} { l c c c c c c } 
\text { Hour } & 1 & 2 & 3 & 4 & 5 & 6 \
& & & & & & \
\text { Mass } & 145.20 & 146.20 & 145.30 & 144.60 & 144.80 & 146.30 \
\text { Hour } & 7 & 8 & 9 & 10 & 11 & 12 \
& & & & & & \
\text { Mass } & 144.80 & 145.00 & 146.10 & 145.40 & 143.70 & 145.10 \
\text { Hour } & 13 & 14 & 15 & 16 & 17 & 18 \
\
\text { Mass } & 146.30 & 145.20 & 145.00 & 145.90 & 146.00 & 145.70 \
\text { Hour } & 19 & 20 & 21 & 22 & 23 & 24 \
\
\text { Mass } & 146.30 & 144.80 & 144.90 & 143.80 & 144.30 & 145.60 \
\text { Hour } & 25 & 26 & 27 & 28 & 29 & 30 \
\
\text { Mass } & 144.80 & 145.70 & 145.80 & 144.60 & 145.30 & 144.90 \
\text { Hour } & 31 & 32 & 33 & 34 & 35 & 36 \
\
\text { Mass } & 146.20 & 146.30 & 144.00 & 145.40 & 144.60 & 145.50
\end{array}$

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 18

Find 48.7% of 360o Round your answer to the nearest tenth.

Accepted Answer

A)  185.1o 
B)  164.5o 
C)  150.1o 
D)  175.3o 
E)  160.9o 
A)  185.1o 
B)  164.5o 
C)  150.1o 
D)  175.3o 
E)  160.9o

Question 19

Find the median measurement for the set of measurements.   $244$ , $623$ , $322$ , $122$ , $763$ , $959$ , $846$ , $29,006$ , $853$ , $194$ , $343$ , $364$ , $283$ , $628$ , $733$ , $804$ , $44,409$ , $213$ , $488$

Accepted Answer

A)  $384$ 
B)  $251$ 
C)  $290$ 
D)  $401$ 
E)  $364$ 
A)  $384$ 
B)  $251$ 
C)  $290$ 
D)  $401$ 
E)  $364$

Question 20

Consider the following bar graph. How many barrels of oil per day were used by Italy?

Accepted Answer

A)  0.19 million barrels 
B)  2.3 million barrels 
C)  1.9 million barrels 
D)  1.7 million barrels 
E)  2.1 million barrels 
A)  0.19 million barrels 
B)  2.3 million barrels 
C)  1.9 million barrels 
D)  1.7 million barrels 
E)  2.1 million barrels

A spinner has numbers 1-7 marked equally on the face. If the spinner is spun 4 times, what is the probability of getting a 6, a 5, a 1 and a 4?

Draw a circle graph. In the United States for 2000, the percentage of national household income by quintiles was as follows: 1st, 4%; 2nd, 17.1%; 3rd, 36.7%; 4th, 24.4%; 5th, 17.8%.

In one month, the sales of calculators were as follows: Brand A: 31 Brand D: 78 Brand B: 56 Brand E: 42 Brand C: 14 What central angle of a circle graph would show Brand B's sales as a percent of the total sales for the month? Round your answer to the nearest tenth.

Find the sample standard deviation from the set of measurements below. $47.68 \mathrm {~cm} , 48.25 \mathrm {~cm} , 47.99 \mathrm {~cm} , 47.86 \mathrm {~cm}$

Use the figure below to answer the following question. Between what two decibel readings is the least change in power output found? (Hint: assume that db readings were taken at the following points: 18, 20, 22, 24, 26, 28, 30, 32)

Find the median measurement for the set of measurements. $3,185$ ; $448 \overline { 0 }$ ; $2,961$ ; $7,638$ ; $1,189$ ; $6,653$ ; $2,168$ ; $8,191$ ; $5,103$ ; $9,665$ ; $5,108$ ; $6,208$ ; $1,988$ ; $4,037$ ; $1,205$ ; $3,208$ ; $4,696$ ; $3,309$ ; $7,227$

Find the median measurement for the set of measurements. $203 \overline { 0 }$ , $1,955$ , $2,135$ , $2,238$ , $2,147$ , $1,869$ , $1,999$ , $1,784$

Draw a histogram for the data displayed in the following frequency distribution. Interval Frequency t 41.5-48.5 11 48.5-55.5 18 55.5-62.5 23 62.5-69.5 25 69.5-76.5 5 76.5-83.5 2

Consider the following bar graph. What is the total number of barrels of oil per day used by all the countries listed? __________ million barrels

Find the mean measurement for the set of measurements. 21, 53, 76, 46, 63, 26, 55, 82, 97, 36, 12

Find the mean measurement for the set of measurements. 0.019, 0.118, 0.059, 0.198, 0.228, 0.182, 0.227, 0.331, 0.534, 0.344, 0.197, 0.254

The following list gives 50 pieces of ranked data (ranked from smallest to largest). Find the 7th percentile. Ranked data 12 48 82 123 148 19 53 85 123 148 22 55 89 126 153 24 56 98 130 154 31 58 102 130 159 33 66 103 131 161 36 66 105 136 166 38 74 109 140 166 44 78 116 143 172 47 78 121 146 175

Find the sample standard deviation from the set of measurements below. Please round your answer to the nearest ten thousandth. $0.2613 \text { in., } 0.2615 \text { in., } 0.2622 \text { in., } 0.2680 \text { in., } 0.2612 \text { in., } 0.2611 \text { in. }$

Two dice are rolled. What is the probability of getting two 5s?

Find 48.7% of 360^o Round your answer to the nearest tenth.

Find the median measurement for the set of measurements. $244$ , $623$ , $322$ , $122$ , $763$ , $959$ , $846$ , $29,006$ , $853$ , $194$ , $343$ , $364$ , $283$ , $628$ , $733$ , $804$ , $44,409$ , $213$ , $488$

Consider the following bar graph. How many barrels of oil per day were used by Italy?

Basic Concepts

Signed Numbers and Powers of 10

The Metric System

Measurement

Polynomials: an Introduction to Algebra

Equations and Formulas

Ratio and Proportion

Graphing Linear Equations

Systems of Linear Equations

Factoring Algebraic Expressions

Quadratic Equations

Geometry

Right Triangle Trigonometry

Trigonometry With Any Angle

Binary and Hexadecimal Numbers

Filters

Exam 15: Basic Statistics

A spinner has numbers 1-7 marked equally on the face. If the spinner is spun 4 times, what is the probability of getting a 6, a 5, a 1 and a 4?

Draw a circle graph. In the United States for 2000, the percentage of national household income by quintiles was as follows: 1st, 4%; 2nd, 17.1%; 3rd, 36.7%; 4th, 24.4%; 5th, 17.8%.

In one month, the sales of calculators were as follows: Brand A: 31 Brand D: 78 Brand B: 56 Brand E: 42 Brand C: 14 What central angle of a circle graph would show Brand B's sales as a percent of the total sales for the month? Round your answer to the nearest tenth.

Find the sample standard deviation from the set of measurements below. 47.68 cm,48.25 cm,47.99 cm,47.86 cm47.68 \mathrm {~cm} , 48.25 \mathrm {~cm} , 47.99 \mathrm {~cm} , 47.86 \mathrm {~cm}47.68 cm,48.25 cm,47.99 cm,47.86 cm

Use the figure below to answer the following question. Between what two decibel readings is the least change in power output found? (Hint: assume that db readings were taken at the following points: 18, 20, 22, 24, 26, 28, 30, 32)

Find the median measurement for the set of measurements. 2030‾203 \overline { 0 }2030 , 1,9551,9551,955 , 2,1352,1352,135 , 2,2382,2382,238 , 2,1472,1472,147 , 1,8691,8691,869 , 1,9991,9991,999 , 1,7841,7841,784

Draw a histogram for the data displayed in the following frequency distribution. Interval Frequency t 41.5-48.5 11 48.5-55.5 18 55.5-62.5 23 62.5-69.5 25 69.5-76.5 5 76.5-83.5 2

Consider the following bar graph. What is the total number of barrels of oil per day used by all the countries listed? __________ million barrels

Find the mean measurement for the set of measurements. 21, 53, 76, 46, 63, 26, 55, 82, 97, 36, 12

Find the mean measurement for the set of measurements. 0.019, 0.118, 0.059, 0.198, 0.228, 0.182, 0.227, 0.331, 0.534, 0.344, 0.197, 0.254

The following list gives 50 pieces of ranked data (ranked from smallest to largest). Find the 7th percentile. Ranked data 12 48 82 123 148 19 53 85 123 148 22 55 89 126 153 24 56 98 130 154 31 58 102 130 159 33 66 103 131 161 36 66 105 136 166 38 74 109 140 166 44 78 116 143 172 47 78 121 146 175

Two dice are rolled. What is the probability of getting two 5s?

Find 48.7% of 360o Round your answer to the nearest tenth.

Consider the following bar graph. How many barrels of oil per day were used by Italy?

Basic Concepts

Signed Numbers and Powers of 10

The Metric System

Measurement

Polynomials: an Introduction to Algebra

Equations and Formulas

Ratio and Proportion

Graphing Linear Equations

Systems of Linear Equations

Factoring Algebraic Expressions

Quadratic Equations

Geometry

Right Triangle Trigonometry

Trigonometry With Any Angle

Binary and Hexadecimal Numbers

Filters

Find the sample standard deviation from the set of measurements below. $47.68 \mathrm {~cm} , 48.25 \mathrm {~cm} , 47.99 \mathrm {~cm} , 47.86 \mathrm {~cm}$

Find the median measurement for the set of measurements. $203 \overline { 0 }$ , $1,955$ , $2,135$ , $2,238$ , $2,147$ , $1,869$ , $1,999$ , $1,784$

Find 48.7% of 360^o Round your answer to the nearest tenth.