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Collecting Data
Organizing Data
Measures of Center
Measures of Variability
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100

What are the 2 types of samples that will allow your inferences to be valid?

Simple Random Sample and Systematic Random Sample

100

What is the difference between a histogram and a bar graph?

Histograms compare quotative data while bar graphs compare categorical data.

100

The value that has 50% of a data set above it and 50% below it.

Median

100

Calculated by subtracting the lowest value of a data set from the highest value.

range

100

Which data set has a higher median?

Set A:  12, 5, 8, 7, 11, 3, 21, 17, 44, 2

Set B:  6, 8, 5, , 13, 15, 17, 9, 17, 25, 1

Set B 11 vs Set A 9.5

200

What are the two types of samples that will cause your inferences to be invalid?

Convenience Sample and Voluntary Response Sample

200

Which organizational tool clearly displays the total number of data inputs?

two way table

200

The data value that occurs the most.

mode

200
The measure of variability most closely associated with box and whisker plots.

IQR or Inter Quartile Range

200

Which data set has a mean of 11.6?

Set A:  12, 5, 8, 7, 11, 3, 21, 17, 44, 2

Set B:  6, 8, 5, , 13, 15, 17, 9, 17, 25, 1

Set B

300

For a sample of a population to be representative, each member of the population must have...

an equal chance to be chosen for the sample.

300

Which two organizational tools do not clearly display the shape of the data?

Venn Diagram and Two way table

300

The average of the data values.

mean

300

The measure of variation most closely related to scatter plots.

correlation

300

Which data set has greater variability based off of IQR?

Set A:  12, 5, 8, 7, 11, 3, 21, 17, 44, 2

Set B:  6, 8, 5, , 13, 15, 17, 9, 17, 25, 1

Set A 12 vs Set B 11

400

In a _______ sample, one or more parts of the population are favored over the others.

biased

400

Which organizational tool is best associated with the five point summary?

box and whisker

400

The measure of center used for a scatter plot.

Line of best fit

400

What range of values can correlation be described with?

between -1 and 1

400

Which data set is skewed left?

Neither...both have a mean that is greater than the median, which means both are skewed right

500
Why do we use samples to make inferences about an entire population?
To save time and money or when surveying an entire population isn't feasible.
500

Which organizational tool is best associated with correlation and line of best fit?

Scatter Plot

500

How to describe a data set where the mean is greater than the median.

Skewed right

500

What does a correlation of 0 tell us about a data set?

The is no clear pattern or trend to the data points

500

What is an equation for the line of best fit for this data?

x: 1, 3, 4, 5, 6, 7, 8, 9

y: 5, 10, 15, 12, 17, 24, 20, 25

something close to;  y = 2.5x