Interpreting Data from Tables - ACT Science
Card 1 of 30
What is the mean of the table values $4, 6, 8$?
What is the mean of the table values $4, 6, 8$?
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$6$. Sum divided by count: $(4+6+8)/3=6$.
$6$. Sum divided by count: $(4+6+8)/3=6$.
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Find the sum of the dataset: 4, 6, 8, 10.
Find the sum of the dataset: 4, 6, 8, 10.
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The sum is 28. Add all values: $4 + 6 + 8 + 10 = 28$.
The sum is 28. Add all values: $4 + 6 + 8 + 10 = 28$.
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Which column shows consistent growth if values are 2, 4, 8?
Which column shows consistent growth if values are 2, 4, 8?
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Exponential growth. Each value doubles: geometric growth pattern.
Exponential growth. Each value doubles: geometric growth pattern.
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If Column B has values 3, 4, 5, what is the percentage increase from 3 to 5?
If Column B has values 3, 4, 5, what is the percentage increase from 3 to 5?
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66.67%. Change from 3 to 5 is 2/3 = 66.67%.
66.67%. Change from 3 to 5 is 2/3 = 66.67%.
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What is the average of two replicate table measurements $10.2$ and $10.6$?
What is the average of two replicate table measurements $10.2$ and $10.6$?
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$10.4$. Sum divided by two: $(10.2+10.6)/2$.
$10.4$. Sum divided by two: $(10.2+10.6)/2$.
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Which value is the mode in this dataset: 1, 2, 2, 3, 4?
Which value is the mode in this dataset: 1, 2, 2, 3, 4?
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The mode is 2. The value 2 appears twice, more than others.
The mode is 2. The value 2 appears twice, more than others.
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Find the sum of this dataset: 7, 9, 11, 13.
Find the sum of this dataset: 7, 9, 11, 13.
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The sum is 40. Add all values: $7 + 9 + 11 + 13 = 40$.
The sum is 40. Add all values: $7 + 9 + 11 + 13 = 40$.
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Determine the smallest value in the dataset: 15, 12, 9, 18.
Determine the smallest value in the dataset: 15, 12, 9, 18.
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The smallest value is 9. Compare all values to find the smallest.
The smallest value is 9. Compare all values to find the smallest.
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What is the range of the table values $3, 7, 7, 10$?
What is the range of the table values $3, 7, 7, 10$?
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$7$. Maximum minus minimum: $10-3=7$.
$7$. Maximum minus minimum: $10-3=7$.
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What does the unit shown in a table header indicate about every value in that column?
What does the unit shown in a table header indicate about every value in that column?
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Each entry is measured in that unit. The unit applies uniformly to all data in that column.
Each entry is measured in that unit. The unit applies uniformly to all data in that column.
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What is the correct first step when interpreting a scientific data table?
What is the correct first step when interpreting a scientific data table?
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Read the title and all headers (including units). Understanding structure prevents misinterpretation of data.
Read the title and all headers (including units). Understanding structure prevents misinterpretation of data.
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What is the independent variable in a table when one column is explicitly labeled as such?
What is the independent variable in a table when one column is explicitly labeled as such?
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The column labeled independent variable. The manipulated variable is what experimenters control.
The column labeled independent variable. The manipulated variable is what experimenters control.
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What is the dependent variable in a table when one column is explicitly labeled as such?
What is the dependent variable in a table when one column is explicitly labeled as such?
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The column labeled dependent variable. The response variable is what experimenters measure.
The column labeled dependent variable. The response variable is what experimenters measure.
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What does a blank cell in a data table most commonly represent in ACT Science contexts?
What does a blank cell in a data table most commonly represent in ACT Science contexts?
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No data recorded or not applicable for that condition. Missing data indicates measurement wasn't taken.
No data recorded or not applicable for that condition. Missing data indicates measurement wasn't taken.
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What does the symbol “$\times 10^n$” in a table header tell you to do to each listed value?
What does the symbol “$\times 10^n$” in a table header tell you to do to each listed value?
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Multiply each listed value by $10^n$. Scientific notation scaling factor for large/small values.
Multiply each listed value by $10^n$. Scientific notation scaling factor for large/small values.
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What does a footnote marker (such as “*”) next to a table value indicate?
What does a footnote marker (such as “*”) next to a table value indicate?
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A special condition or note applies to that value. Footnotes provide additional context or exceptions.
A special condition or note applies to that value. Footnotes provide additional context or exceptions.
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What is the meaning of “mean” in a table summary row labeled “Mean”?
What is the meaning of “mean” in a table summary row labeled “Mean”?
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Average value: sum divided by number of entries. Standard statistical measure of central tendency.
Average value: sum divided by number of entries. Standard statistical measure of central tendency.
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What is the meaning of “range” for a set of table values?
What is the meaning of “range” for a set of table values?
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Range $=$ maximum minus minimum. Measures the spread of data values.
Range $=$ maximum minus minimum. Measures the spread of data values.
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What is the meaning of “percent change” from an initial to a final table value?
What is the meaning of “percent change” from an initial to a final table value?
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$\frac{\text{final}-\text{initial}}{\text{initial}}\times 100%$. Standard formula for relative change calculation.
$\frac{\text{final}-\text{initial}}{\text{initial}}\times 100%$. Standard formula for relative change calculation.
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What is the meaning of “rate” when computed from two table entries over time?
What is the meaning of “rate” when computed from two table entries over time?
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Rate $=\frac{\Delta \text{quantity}}{\Delta \text{time}}$. Change per unit time measures process speed.
Rate $=\frac{\Delta \text{quantity}}{\Delta \text{time}}$. Change per unit time measures process speed.
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What is the correct way to compare two conditions in a table when the units differ?
What is the correct way to compare two conditions in a table when the units differ?
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Convert to consistent units before comparing. Unit consistency is required for valid comparisons.
Convert to consistent units before comparing. Unit consistency is required for valid comparisons.
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What does it mean if a column is labeled “Concentration (mg/L)”?
What does it mean if a column is labeled “Concentration (mg/L)”?
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Each value is a concentration measured in $\text{mg}/\text{L}$. Mass per volume unit indicates solution strength.
Each value is a concentration measured in $\text{mg}/\text{L}$. Mass per volume unit indicates solution strength.
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What does a table entry written as “$3.2\pm 0.1$” typically represent?
What does a table entry written as “$3.2\pm 0.1$” typically represent?
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A value with uncertainty: $3.2$ with margin $0.1$. Plus-minus notation shows measurement uncertainty.
A value with uncertainty: $3.2$ with margin $0.1$. Plus-minus notation shows measurement uncertainty.
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Identify the correct rule for selecting a value when asked for the “closest” table value.
Identify the correct rule for selecting a value when asked for the “closest” table value.
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Choose the entry with smallest absolute difference. Minimize distance to find the nearest match.
Choose the entry with smallest absolute difference. Minimize distance to find the nearest match.
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What is the median of the ordered values $2, 5, 9, 12, 20$ in a table row?
What is the median of the ordered values $2, 5, 9, 12, 20$ in a table row?
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$9$. Middle value when data is arranged in order.
$9$. Middle value when data is arranged in order.
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What is the percent change from $50$ to $65$ for a table value that increases?
What is the percent change from $50$ to $65$ for a table value that increases?
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$30%$. $(65-50)/50 \times 100% = 30%$.
$30%$. $(65-50)/50 \times 100% = 30%$.
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What is the percent change from $80$ to $60$ for a table value that decreases?
What is the percent change from $80$ to $60$ for a table value that decreases?
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$-25%$. $(60-80)/80 \times 100% = -25%$.
$-25%$. $(60-80)/80 \times 100% = -25%$.
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What is the rate if a table shows mass increases from $10,\text{g}$ to $16,\text{g}$ in $3,\text{s}$?
What is the rate if a table shows mass increases from $10,\text{g}$ to $16,\text{g}$ in $3,\text{s}$?
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$2,\text{g}/\text{s}$. Change in mass over time: $(16-10)/3=2$.
$2,\text{g}/\text{s}$. Change in mass over time: $(16-10)/3=2$.
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What is the slope between table points $(t, y)$ of $(2, 5)$ and $(6, 13)$?
What is the slope between table points $(t, y)$ of $(2, 5)$ and $(6, 13)$?
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$2$. Rise over run: $(13-5)/(6-2)=2$.
$2$. Rise over run: $(13-5)/(6-2)=2$.
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What is $y$ at $x=4$ if a table shows a linear pattern: $(1,3)$, $(2,5)$, $(3,7)$?
What is $y$ at $x=4$ if a table shows a linear pattern: $(1,3)$, $(2,5)$, $(3,7)$?
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$9$. Pattern increases by 2 each step: $7+2=9$.
$9$. Pattern increases by 2 each step: $7+2=9$.
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