Ch. 2 Analyzing Data

Multiple Choice

What makes a number a measurement?

• A number is a measurement when it includes units.

• A number is a measurement when it is used in a calculation.
• A number is a measurement if it is written in words.
• A number is a measurement when it is a whole number.

Multiple Choice

If Density = Mass/Volume what related formula allows us to find mass when given density and volume?

• Mass = Density × Volume
• Mass = Volume / Density
• Mass = Density/ Volume

• Mass = Density + Volume

Multiple Choice

If Density = Mass/Volume what related formula allows us to find volume when given density and mass?

• Volume = Mass/Density
• Volume = Density/Mass
• Volume = Mass + Density
• Volume = Mass * Density

Multiple Choice

When adding or subtracting in scientific notation the exponents must be _____.

• decreasing
• increasing
• different
• the same

Multiple Choice

When multiplying and dividing with scientific notation the exponents _____.

• are ignored in both operations
• are added when multiplying and subtracted when dividing
• are always kept the same regardless of the operation
• are multiplied when multiplying and divided when dividing

Multiple Choice

What is a conversion factor?

• A conversion factor is a ratio that expresses how many of one unit are equal to another unit.
• A conversion factor is a tool used for measuring distances.
• A conversion factor is a method for converting currencies.
• A conversion factor is a type of mathematical equation.

Multiple Choice

Accuracy is related to which of the following?

• Reproducibility of a result or measurement

• Correctness of a result or measurement

Multiple Choice

Precision is related to which of the following?

• Reproducibility of a result or measurement

• Correctness of a result or measurement

Multiple Choice

Calculate % error given an error of -.75 ml and an accepted value of 29.8 ml

• -0.025%

• -2.5%

• 2.5%

• 0.025%

Multiple Choice

How many significant figures are in 0.00040230?

• 4
• 6
• 3
• 5

Multiple Choice

How many significant figures are in the number 405,000?

• 5
• 4
• 3
• 2

Multiple Choice

A student measured the length of his 3 lab partners' shoes and found them to be 28.0 cm, 23.538 cm, and 25.68 cm. What is the total length of the shoes using the correct decimals?

• 77.22 cm

• 77.2 cm

• 77.218 cm

• 77 cm

Multiple Choice

Calculate the volume of a book with a length of 28.3 cm, width of 22.2 cm, and height of 3.65 cm. Use correct significant figures.

• 2290 cm³

• 2300 cm³
• 2294 cm³

• 2293.1 cm³

Multiple Choice

What type of graph is best used to show percentages of categories?

• Pie chart
• Line graph
• Bar chart
• Histogram

Multiple Choice

What type of graph shows how results vary across categories?

• Bar graph
• Pie chart
• Line graph
• Scatter plot

Multiple Choice

How is the slope of a line calculated?

• The slope of a line is calculated using the formula m = (y2 - y1) / (x2 - x1).
• The slope can be found using the formula m = (x2 - x1) / (y2 - y1).
• The slope is the distance between two points divided by the time taken.
• The slope is calculated by adding the coordinates of two points.