AP Statistics Unit 6 Vocabulary

What is the term in statistics for the entire collection or group of individuals being studied?

• population

• sample

• parameter

• statistic

What is the branch of mathematics dealing with the collection, organization, analysis, interpretation and presentation of data?

• Algebra

• Geometry

• Probability

• Statistics

What is a characteristic of a sample?

• parameter

• statistic

• categorical variable

• numerical variable

Which of the following is the central limit theorem used for?

• The standard deviation of the distribution of sample means is found by dividing the population standard deviation by n.

• The distribution of sample means will be approximately normal if the sample size is at least 30.

• The distribution of sample proportions is approximately normal if both np and n(1 - p) are greater than or equal to 10.

• As sample size increases, variability decreases.

53.2% of applicants are accepted into UConn. In a sample of 100 UConn applicants, 45 of them were accepted. What is the parameter?

• All UConn applicants.

• The 100 applicants in the sample.

• 53.2% acceptance rate.

• 45% of accepted in sample.

Match the following types of plots:

• Dot Plot

• A graphical representation of

  the five-number summary (minimum, first

  quartile, median, third quartile, maximum).

• Histogram

• The height of each bar shows

  the number or proportion of observations that

  fall within the interval corresponding to that

  bar. Altering the interval widths can change the

  appearance of the histogram.

• Box Plot

• Represents each observation by

  a dot, with the position on the horizontal

  axis corresponding to the data value of that

  observation, with nearly identical values

  stacked on top of each other.

• Segmented Bar Plot

• Examples of bar graphs for one categorical variable, broken down by categories of another

  categorical variable.

• Stem and Leaf Plot

• Each data value is split

  into the first digit or digits and the last digit.

The elements of a 5-number summary start at the beginning of the ​​range which is the ​ (a)   . The next part is the IQR​ which starts with ​ (b)   , has a bar for the ​ (c)   and ends with ​ (d)   . Finally this ends with the ​ (e)   . Outliers are marked by asterisks or other dots.

• minimum
• Q1
• median
• Q3
• maximum
• mean
• mode
• left skew
• right skew

When the majority of the data is to the right of the graph and there are outliers to the left, the graph is ​ (a)   . Therefore the mean is ​ (b)   the median.

• left-skew

• below

• right-skew

• symmetric

• equal to

• above

When the majority of the data is to the left of the graph and there are outliers to the right, the graph is ​ (a)   . Therefore the mean is ​ (b)   the median.

• right-skew

• above

• symmetric

• equal to

• left-skew

• below

Based on the Empirical Rule, make the following true:

​ (a)   of data is contained in one standard deviation from the mean.

​ (b)   of data is contained in two standard deviations below the mean.

​ (c)   of data is contained in three standard deviations above the mean.

• 68%

• 47.5%

• 49.85%

• 95%

• 99.7%

• 34%