Practice 3B for QR

Last updated almost 2 years ago

11 questions

Untitled Section

1

#3-5

1

#6-10

1

Note: There is no wrong answer for this question.

a

b

c

Note the black vertical line is the location of the mean, which is 4.6.

https://www.waterbenefitshealth.com/water-and-brain.html

42

38

36

40

Note: Sample Mean= Total/6

37

38

39

How does the sample mean (problem 9) compare to the population mean (problem 6)?

The sample mean is less than the population mean.

The sample mean is equal to the population mean.

The sample mean is greater than the population mean.

How does the spread (range) of data points in the sample dot plot (problem 9) compare to the spread (range) of data points in the population dot plot (problem 6)?

The spread for the sample dot plot is smaller than the population spread.

The spread for the sample dot plot is the same as the population spread.

The spread for the sample dot plot is greater than the population spread.

Note: There is no wrong answer for this question.

a

b

c

42

38

36

40

37

38

39

How does the sample mean (problem 9) compare to the population mean (problem 6)?

The sample mean is less than the population mean.

The sample mean is equal to the population mean.

The sample mean is greater than the population mean.

How does the spread (range) of data points in the sample dot plot (problem 9) compare to the spread (range) of data points in the population dot plot (problem 6)?

The spread for the sample dot plot is smaller than the population spread.

The spread for the sample dot plot is the same as the population spread.

The spread for the sample dot plot is greater than the population spread.