ACAP Statistics

Select the questions that qualify as statistical questions. Choose all that apply.

• How many letters are in my last name?

• How many letters are in the last names of the students in my 6th grade class?

• What are the colors of the shoes worn by the students in my school?

• What are the heart rates of the students in a 6th grade class?

• How many hours of sleep per night do 6th graders usually get when they have school the next day?

Select the sampling method used for the following situation:

A person chooses every 5th person on a list of names starting with #1.

• Convenience Sample

• Systematic Sample

• Simple Random Sample

Select the sampling method used for the following situation:

A person picks names out of a hat.

• Convenience Sample

• Systematic Sample

• Simple Random Sample

A jar of marbles contains gray and black marbles. You collect the representative sample shown here: . If the jar contains 50 marbles, about how many marbles are gray? Write your answer in the box given below.

a question that can be answered by collecting data that vary.

• Quartiles

• Statistical Questions

• Box Plot

Choose the statistical question:

• What time did you wake up this morning?

• What time do 12th graders wake up each morning during the school week?

It is the branch of applied mathematics dealing with data collection, organization, analysis, interpretation and presentation.

• Algebra

• Trigonometry

• Statistics

• Geometry

A scientific body of knowledge which deals with collection, presentation, interpretation and analysis of data.

• Probability

• Statistics

• Sequence

• Geometry

Choose the correct concept:

• Is a diagram in which the numerical values of variables are represented by the height or length of lines or rectangles of equal width.

• The number of observations is marked with a single point at the midpoint of an interval.

• Is an accurate representation of the distribution of numerical data. It is an estimate of the probability distribution of a continuous variable.

• The graph is divided into sectors, where each sector shows the relative size of each value

What is the class mark of the third row?

• 24

• 24.5

• 25

• 25.5