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SAT science passages hypothesis and data practice

Practice hypothesis formulation and data interpretation skills using SAT science passages.

CharlotteBrown·32 flashcards·32 questions

SATlanguage_artsreading

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Front

Hypothesis: Testable statement or prediction?

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True. A hypothesis must be testable and falsifiable.

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Quiz(32 questions)

Question 1 of 32

1. What does the term 'data trend' refer to?

Terms in this Study Set(32)

Hypothesis Development(16)

Hypothesis: Testable statement or prediction?

True. A hypothesis must be testable and falsifiable.

Define a null hypothesis.

The null hypothesis states there is no effect or relationship between variables.

If temperature increases, what does that suggest?

Hypothesize: Increased temperature could lead to faster reaction rates.

Fill in the blank: An effective hypothesis is __________.

specific and measurable.

Comparison: Hypothesis vs. Theory.

Hypothesis: testable prediction. Theory: well-substantiated explanation.

Formulate a hypothesis: Watering plants affects growth.

Hypothesis: Plants watered daily will grow taller than those not watered.

True or False: Hypotheses can be proven true.

False. Hypotheses can only be supported or rejected based on evidence.

Identify the independent variable: Effect of sunlight on plant growth.

Independent variable: Amount of sunlight.

Cause → Effect: Increased CO2 levels.

Effect: Hypothesis: Increased CO2 levels will enhance plant photosynthesis.

When formulating a hypothesis, what must be included?

Variables involved and expected relationship.

Example: Effect of fertilizer types on crop yield.

Hypothesis: Organic fertilizer will produce higher crop yields than synthetic.

Select the best hypothesis: A. No effect, B. Significant effect.

Choose B. A hypothesis should suggest a significant effect for testing.

Differences between qualitative and quantitative hypotheses.

Qualitative: descriptive. Quantitative: measurable, often numerical.

Hypothesis testing involves what key steps?

Formulate hypothesis, conduct experiment, analyze data, draw conclusions.

True or False: All hypotheses lead to experiments.

True. A hypothesis must be tested through experimentation.

Example of a directional hypothesis.

Hypothesis: Increasing study time will improve test scores.

Data Interpretation(16)

What is a data trend?

A data trend is a general direction in which data points move over time, indicating patterns or behaviors.

True or False: A larger sample size increases the reliability of results.

True. Larger sample sizes reduce variability and provide more accurate estimates of the population.

Fill in the blank: The __________ represents the average value in a data set.

mean

How do you calculate the median?

To find the median, arrange data points in ascending order and select the middle value.

What is a correlation coefficient?

A numerical measure (between -1 and 1) that indicates the strength and direction of a linear relationship between two variables.

Comparison: Mean vs. Median

- Mean: Average of all data points. - Median: Middle value; less affected by outliers.

Cause → Effect: Increased temperature → ________

Higher kinetic energy in molecules.

What does a bar graph represent?

A bar graph displays categorical data using rectangular bars, showing comparisons among different categories.

True or False: Outliers always affect the mean.

True. Outliers can skew the mean significantly, impacting data interpretation.

What are independent and dependent variables?

Independent variable: manipulated by the researcher; dependent variable: measured outcome affected by the independent variable.

Calculate the range: Data set 3, 7, 5, 10, 2

Range = 10 - 2 = 8

Define standard deviation.

Standard deviation measures the amount of variation or dispersion in a set of values, indicating data spread.

How to interpret a scatter plot?

Look for trends, patterns, clusters, or outliers among the plotted points to understand relationships.

What is a control group?

A control group is a baseline group in experiments that does not receive the treatment, allowing for comparison.

Fill in the blank: A __________ is a prediction that can be tested.

hypothesis

What is the purpose of data visualization?

Data visualization presents data graphically to make complex information easier to understand and interpret.

Questions in this Study Set(32)

1. What does the term 'data trend' refer to?

A.A general direction in which data points move over time.

B.A specific data point that stands out.

C.The total sum of all data points.

D.A random grouping of data points.

2. What is a hypothesis?

A.A testable prediction

B.A confirmed theory

C.An irrelevant assumption

D.A vague statement

3. True or False: Increasing the sample size of a survey can reduce the variability of the results.

A.True

B.False

C.Depends on the survey type

D.Only true for small samples

4. What is the purpose of a null hypothesis?

A.To prove a theory

B.To state there is no effect or relationship

C.To suggest possible outcomes

D.To confirm the hypothesis

5. Fill in the blank: The __________ of a data set is found by adding all values and dividing by the number of values.

A.mean

B.mode

C.median

D.range

6. When temperature increases, what could you hypothesize about reaction rates?

A.They will slow down.

B.They will not change.

C.They will increase.

D.They will become unpredictable.

7. How do you determine the median in a data set?

A.Arrange the data in order and find the middle value.

B.Calculate the average of all the values.

C.Look for the most frequently occurring value.

D.Identify the highest and lowest values.

8. Fill in the blank: A good hypothesis is __________.

A.ambiguous and broad

B.specific and measurable

C.based on intuition

D.difficult to test

9. What does a correlation coefficient of -0.8 indicate?

A.A strong negative relationship between two variables.

B.No relationship between two variables.

C.A strong positive relationship between two variables.

D.A weak negative relationship.

10. How does a hypothesis differ from a theory?

A.Hypothesis is a guess; theory is a fact.

B.Hypothesis is a testable prediction; theory is a well-substantiated explanation.

C.Hypothesis is always correct; theory is not.

D.Hypothesis requires no evidence; theory needs proof.

11. When comparing mean and median, which statement is correct?

A.The mean can be skewed by outliers, while the median is more robust.

B.The median is always higher than the mean.

C.The mean and median are always equal.

D.The median is more affected by outliers than the mean.

12. What is an example of a hypothesis regarding plant growth?

A.Plants will grow.

B.Plant growth is affected by soil.

C.Plants watered daily will grow taller than those not watered.

D.Watering does not affect plants.

13. In a scientific experiment, if temperature increases, what effect does it generally have on molecular motion?

A.It increases the kinetic energy in molecules.

B.It decreases molecular collision frequency.

C.It causes molecules to freeze.

D.It has no effect on molecular motion.

14. True or False: A hypothesis can be proven true.

A.True

B.False

C.Depends on context

D.Always

15. What type of data does a bar graph primarily represent?

A.Categorical data.

B.Continuous numerical data.

C.Correlations between two variables.

D.Time-series data.

16. Identify the independent variable: 'The effect of sunlight on plant growth.'

A.Type of plant

B.Amount of water

C.Amount of sunlight

D.Soil type

17. True or False: Outliers can significantly skew the mean of a data set.

A.True

B.False

C.Only in small data sets

D.Only in large data sets

18. If CO2 levels increase, what effect might you hypothesize?

A.Photosynthesis will decrease.

B.Plant growth will stop.

C.Photosynthesis will enhance.

D.Plant health will deteriorate.

19. What defines independent and dependent variables in an experiment?

A.Independent variables are manipulated; dependent variables are measured.

B.Dependent variables are manipulated; independent variables are fixed.

C.Both variables are always the same.

D.Neither variable can be controlled.

20. What must be included when formulating a hypothesis?

A.Only a conclusion

B.Variables and expected relationship

C.A detailed experiment description

D.No need for clarity

21. Calculate the range of the following data set: 5, 12, 3, 8, 7.

A.9

B.10

C.5

D.15

22. Choose the best hypothesis: A. There is no effect, B. There is a significant effect.

A.A

B.B

C.Both are valid

D.Neither is valid

23. What does standard deviation measure in a data set?

A.The amount of variation or dispersion of values.

B.The average value of the data set.

C.The total number of data points.

D.The highest value in the data set.

24. What is the difference between qualitative and quantitative hypotheses?

A.Qualitative is measurable; quantitative is descriptive.

B.Qualitative is descriptive; quantitative is measurable.

C.Both are the same.

D.Neither is useful.

25. How should you interpret a scatter plot showing a cluster of points with a positive slope?

A.Indicates a positive correlation between the two variables.

B.Indicates a negative correlation.

C.Indicates no correlation.

D.Indicates random data points.

26. Which of the following is a key step in hypothesis testing?

A.Formulate hypothesis

B.Ignore data

C.Make assumptions

D.Avoid experimentation

27. What is the role of a control group in scientific research?

A.To provide a baseline for comparison against the experimental group.

B.To implement the experimental treatment.

C.To ensure that all variables are manipulated.

D.To collect data from multiple sources.

28. True or False: Not all hypotheses lead to experiments.

A.True

B.False

C.Depends on the hypothesis

D.Hypotheses are optional

29. Fill in the blank: A __________ is a testable prediction made before an experiment begins.

A.hypothesis

B.theory

C.variable

D.conclusion

30. What is an example of a directional hypothesis?

A.Study time does not matter.

B.Increasing study time will improve test scores.

C.Scores will vary.

D.Study time does not affect scores.

31. What is the main purpose of data visualization?

A.To present complex data in a clear, understandable format.

B.To hide important data points.

C.To create confusion around data interpretation.

D.To increase the volume of data.

32. In a scientific study examining the effect of different types of soil on plant height, which of the following is a correctly formulated hypothesis?

A.Plants will grow taller in nutrient-rich soil than in poor soil.

B.Soil type has no impact on plant growth.

C.Plant growth is affected by various factors.

D.Plants prefer certain colors of soil.

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SAT science passages hypothesis and data practice

Quiz(32 questions)

Terms in this Study Set(32)

Hypothesis Development(16)

Data Interpretation(16)

Questions in this Study Set(32)

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