 |
| 1 | |
Six friends sold chocolate bars to raise money for the student council. Their sales were 12, 19, 14, 19, 12, and 12 bars. What is the mean of these data? |
| | A) | 12 |
| | B) | 13 |
| | C) | 14.7 |
| | D) | 19 |
|
|
|
| 2 | |
What is the median of the data in question 1? |
| | A) | 12 |
| | B) | 13 |
| | C) | 14.7 |
| | D) | 19 |
|
|
|
| 3 | |
What is the mode of the data in question 1? |
| | A) | 12 |
| | B) | 13 |
| | C) | 14.7 |
| | D) | 19 |
|
|
|
| 4 | |
Which of these is a measure of central tendency? |
| | A) | mean |
| | B) | median |
| | C) | mode |
| | D) | All of these measure central tendency. |
|
|
|
| 5 | |
Yearbook sales for Fridgeway High School are shown in the graph. Estimate the number sold in 2002.
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070909504/165593/Math7_CH10_Quiz_Q5rev.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (21.0K)</a>]]>
|
| | A) | 220 |
| | B) | 250 |
| | C) | 270 |
| | D) | 300 |
|
|
|
| 6 | |
Predict the number of yearbooks that might be sold in 2005 using the graph from question 5. |
| | A) | 300 |
| | B) | 350 |
| | C) | 400 |
| | D) | 450 |
|
|
|
| 7 | |
Thomas scores one of the top three marks in a math contest. The other two are 95 and 98, with a mean of 96 among the top three. What mark does Thomas score? |
| | A) | 94 |
| | B) | 95 |
| | C) | 96 |
| | D) | 97 |
|
|
|
| 8 | |
Justin is gathering data on his classmates' knowledge of science. One of his questions is who was the most famous scientist of all time? Einstein? Newton? Hawking? Other. How can the bias in this question be removed? |
| | A) | Do not ask for a scientist. |
| | B) | Do not offer choices. Ask students to name someone. |
| | C) | Offer more choices, at least 10. |
| | D) | These are all male. Offer some female choices as well. |
|
|
|
| 9 | |
In the province of Middle, an election is taking place between the Roty party and the Frits party. A pro-Frits newspaper printed the polling chart shown. How can the bias be removed from the chart?
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070909504/165593/Math7_CH10_Quiz_Q9.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (9.0K)</a>]]>
|
| | A) | Use a different colour for each party. |
| | B) | Use a horizontal bar graph rather than a vertical bar graph. |
| | C) | Join the two bars rather than leaving a space between them. |
| | D) | Start the scale on the vertical axis at zero. The difference between the parties is not very large. |
|
|
|
| 10 | |
Suki's father is concerned about Suki's marks in math class. He obtained her results from six chapter tests. How could he determine whether Suki is improving? |
| | A) | He could find the mean. |
| | B) | He could find the median. |
| | C) | He could find the mode. |
| | D) | He could plot the marks on a graph against time, and look for a trend. |
|
|
.