Answers26-27 CFISD TX-Chemistry A CRUsing Math to Analyze Data

Using Math to Analyze Data Answers

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1
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Changes in the temperature of an ice cube taken every minute for 15 minutes

A
line graph
B
scatter plot
C
bar graph
D
histogram
2
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The distribution of grades on a final exam

A
line graph
B
scatter plot
C
bar graph
D
histogram
3

The x-axis (horizontal axis) of the graph should have a range of

A
275 to 300.
B
260 to 330.
C
100 to 500.
4

The number of each color candy in a snack bag

A
line graph
B
scatter plot
C
bar graph
D
histogram
5

The length of a person's hand compared with the length of the same person's foot

A
line graph
B
scatter plot
C
bar graph
D
histogram
6

Consider the data set displayed to the right, showing the results of changing temperature on the volume of a gas. A would be the best type of graph to use to display these data.

A
line graph
B
scatter plot
C
bar graph
7

Which is the best range for the y-axis (vertical axis)?

A
270 to 320
B
50 to 70
C
0 to 100
8

A single penny has a mass of 2.5 g. Abbie and James each measure the mass of a penny multiple times. Which statement about these data sets is true?

A
Abbie's measurements are both more accurate and more precise than James'.
B
Abbie's measurements are more accurate, but less precise than James'.
C
Abbie's measurements are more precise, but less accurate than James'.
D
Abbie’s measurements are both less accurate and less precise than James'.
9

Consider the ruler shown below.The smallest graduation on this ruler is

Question illustration
A
1 cm.
B
0.1 cm.
C
0.01 cm.
10

Which measurement shows the correct degree of precision for this ruler?

A
1.5 cm
B
1 cm
C
1.55 cm
11

Students measured the mass of 25.0 mL of water and found it be 25.4 g. The accepted mass is 25.0 g. What is the percent error of the students' measurement?

Question illustration
A
0.016 %
B
1.6%
C
16.0%
D
160.0%
12

Consider the ruler shown below.Which measurement shows a valid estimate for this ruler?

Question illustration
A
2.3 cm
B
2.35 cm
C
2.350 cm
13

A scientist needs to know the temperature of a mixture to the nearest 0.05°C. Which thermometer would be most useful for the scientist?

A
one with markings every 1°C
B
one with markings every 5°C
C
one with markings every 0.1°C
14

Which of the following features describe your graph? Check all that apply.

A
appropriate title of graph showing the effect of changing temperature on the volume of a gas
B
appropriate axes titles
C
time on the x-axis as the independent variable
D
temperature on the y-axis as the dependent variable
E
data sets are all at equal intervals on each axis
F
range on both axes cover data points in such a way that there is not too much extra space on the graph
15

Twenty students were surveyed to find out how many hours of TV they watch during a school week. The results are shown to the right. Answer the following questions and round your answers to the nearest half hour.The mean of the data is hours.

Answer:

5

16

Twenty students were surveyed to find out how many hours of TV they watch during a school week. The results are shown to the right. Answer the following questions and round your answers to the nearest half hour.The mode of the data is hours.

Answer:

2

17

The range of the data is hours.

Answer:

11

18

Sarita measures the mass and volume of a metal cube. The average mass is 25.3 ± 0.3 g. The average volume is 6.74 ± 0.12 cm3. Which graph correctly shows Sarita's measurements with error bars?

A
Option
B
Option
19

The x-axis (horizontal axis) of the graph should show

A
volume.
B
temperature.
20

The median of the data is hours.

Answer:

4.5

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