Lesson 1 Connect the Dots Develop Understanding

Ready

Use the dot plot to answer problems 1–2.

A dot plot with a number line going from 1 to 8. One dot above the number 1, 3 dots above the number 2, , 3 dots above the number 3, , 6 dots above the number 4, , 4 dots above the number 5, , 2 dots above the number 6, and 1 dot above the number 8 111222333444555666777888

1.

What is the median for this data set?

2.

What is the range for the data set?

Use the data set shown for problems 3–6.

3.

Create a dot plot for the data set.

4.

Find the measures of central tendency (mean and median) for the data set in problem 3.

5.

Create a box plot for the data set.

6.

Which measure of central tendency stands out in a box plot?

Set

7.

Match the scatterplots with the correct correlation coefficients.

  1. ___

    A scatterplot that trends strongly down to the right x404040606060808080100100100y404040606060808080100100100
  2. ___

    A scatterplot where most of the points appear to be randomly grouped in a central area then a few points trend down to the right x404040606060808080100100100y404040606060808080100100100
  3. ___

    A scatterplot where about half of the points trend up to the right while half of the points appear to be randomly grouped in a central area x404040606060808080100100100y404040606060808080100100100
  4. ___

    scatterplot that trends strongly up to the right x404040606060808080100100100y404040606060808080100100100
  5. ___

    A scatterplot where most of the points trend gradually up to the right but with some randomness x404040606060808080100100100y404040606060808080100100100
  6. ___

    A scatterplot where most of the points appear to be random with a slight trend down to the right. x404040606060808080100100100y202020404040606060808080

Use technology to find the correlation coefficient for each data set.

8.

GPA

ACT score

9.

Time (hours)

Packages on Truck

10.

State two things that you know for sure about a data set, if the correlation coefficient is greater than .

11.

State two things that you know for sure about a data set, if the correlation coefficient is .

Go

Create an explicit equation for each sequence. Use your equation to find the desired term of the sequence.

12.

Explicit equation:

Find .

13.

Explicit equation:

Find .

14.

Explicit equation:

Find .

15.

Explicit equation:

Find .

16.

Explicit equation:

Find .

17.

Explicit equation:

Find .

Find the inverse function.

18.

19.

20.