Test 7 Unit 9

Question 1

Based on 400 people in the survey, find 16%

Answer 1

400 x .16 = 64

Question 2

Based on 400 people in the survey, find 23%

Answer 2

400 x .23 = 92

Question 3

Based on 400 people in the survey, find 9%

Answer 3

400 x .09 = 36

Question 4

Based on 400 people in the survey, find 34%

Answer 4

400 x .34 = 136

Question 5

Based on 400 people in the survey, find 18%

Answer 5

400 x .18 = 72

Question 6

Find the Pct to the nearest thousandth.

Games won – 15; Games played – 25

Answer 6

15 divided by 25 = .600

Question 7

Find the Pct to the nearest thousandth.

Games won – 10; Games lost – 15

Answer 7

total games 25. 10 divided by 25 = .400

Question 8

Find the Pct to the nearest thousandth.

Games won – 18; Games lost – 18

Answer 8

total games 36. 18 divided by 36 = .500

Question 9

Find the mean. 14;25;18;14;9

Answer 9

16

Question 10

Find the mean. 9;11;8;7;10

Answer 10

9

Question 11

Find the median. 93;17;85;42;15;19;78

Answer 11

15;17;19;42;78;85;93 odd number 42 in middle

42

Question 12

Find the median. 11;15;9;7;7;12

Answer 12

7;7;9;11;12;15 even number avg. middle two 9&11. Median is 10

Question 13

Find the mode of 9;12;7;9;3;8

Answer 13

9

Question 14

Find the mode of 97;86;85;93;86;88;91

Answer 14

86

Question 15

a round graph

Answer 15

circle graph (or pie)

Question 16

a vertical bar graph that deals with frequencies

Answer 16

histogram

Question 17

a graph with pictures

Answer 17

pictograph

Question 18

a graph with bars

Answer 18

bar or column graph

Question 19

a graph with lines

Answer 19

line graph

Question 20

Dustin had these grades on his last report slip: 93; 97; 85; 74; and 91. Rank the grades from least to greatest.

Answer 20

74; 85; 91; 93; 97

Question 21

For the past five days, the Criswell family has traveled these miles: 389; 126; 419; 93; and 394. Find the range.

Answer 21

326 mi.

Question 22

If 1/4 inch represents 50 miles, how many inches are needed to represent 225 miles?

Answer 22

225 divided by 50 = 4.5

4. 5 x 1/4 =
5. 5 x .25 = 1.125 = 1 1/8 inch

Question 23

Miss Taylor graded 50 English research papers. 12 of them received a grade of A. Miss Taylor drew a circle graph to display the grades. What percent of the circle graph was devoted to the A papers?

Answer 23

12 divided by 50 = .24 or 24%

Question 24

A histogram showed that 8 students made between 60 & 70, 7 made between 70 & 80, 11 made between 80 & 90, and 9 made between 90 & 100. How many students took the test?

Answer 24

35 students

Question 25

Delbert’s Deli sold the following sandwiches last week: 145 tuna, 289 turkey, 167 ham, 315 club, and 244 subs. Find the mean number sold.

Answer 25

232

Question 26

The prices of the sandwiches are as follows: tuna - $4.69; turkey - $3.89, ham - $3.49, club - $4.89, and sub - $4.25. Find the median price.

Answer 26

$4.25

Question 27

six boys had these times for the 100 meter dash - 12 sec, 14 sec, 13 sec, 13.5 sec, 12 sec, 14.5 sec. Find the mode.

Answer 27

12 sec