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WorksheetsEA Science NBPTS Component 1 - C
Total questions: 27
Worksheet time: 24mins
Used to infer what is happening to the general population
Mean
Statistics
Chi-Square
Central Tendencies
Descriptive statistics allows for researchers to describe and quantify difference between data sets
Mean
Statistics
Central Tendencies
Chi-Square
What are the central tendencies?
(a)
The average of the data set
Mean
Median
Mode
Range
Students in a biology class planted five tomato seeds in separate containers. They exposed the seeds to an artificial light source for twenty days. At the end of the twenty days, the students measured the height of the tomato plant that grew from those seeds. The data is shown below. What is the mean of the data?
(a)
The middle number in a range of data points. Useful in data sets that have measurements with extreme values or abnormal distribution
Mean
Median
Mode
Range
A group of Labrador retrievers is training for the police academy. One tests is the "sniff" test, where police officers time how long it takes the dogs to find a scent. They collected the data on a group of nine dogs. The data is in the table below. What is the median?
(a)
The value that appears most often in a data set.
Mean
Median
Mode
Range
The measure of how far a data set diverges from the central tendency.
Mean
Range
Standard Deviation
Variability
Variability is measured by _____ & _____.
Mean
Range
Standard Deviation
Chi-Square
The difference between the largest and smallest values.
Mean
Range
Standard Deviation
Variability
Larger range will have _____ variability and smaller range will have _____ variability.
greater, less
greater, greater
less, greater
less, less
Referencing the tomato plants data from earlier, what is the range?
(a)
A measure of how spread out the data is from the mean.
Variability
Standard deviation
Range
Mean
Low standard deviation is _____ to the mean and _____ variable is likely causing the changes.
Farther, Independent
Farther, Other
Closer, Independent
Closer, Other
High standard deviation is _____ from the mean and _____ variable is likely causing the changes.
Farther, Independent
Farther, Other
Closer, Independent
Closer, Other
Label the graphs as low and high standard deviation.
Add in the percentages for each standard deviation.
Data from tomato plant experiment earlier. Calculate the standard deviation.
(a)
Data from tomato plant experiment earlier. Calculate two standard deviations. What does this mean?
(a)
Used to determine the precision and confidence in the mean value and usually given as +/- 2 SE (How well does the mean sample represent the true mean of the population)
Standard Error of the Mean
Mean
Standard Deviation
Range
Low standard error equals _____ in confidence
Decrease
Increase
Data from tomato plant experiment earlier. Calculate the standard error of the mean.
(a)
Standard error can be graphed as _____.
Error Bars
Bar Graph
Standard Deviation Bars
Line Graph
If error bars overlap, the difference _____ significant.
is Not
May Be
If error bars do not overlap, the difference _____ significant.
Not
May Be
The differences in the graph:
are not significant
are significant
