Describing Data Test REVIEW

The box plot and table represent data on the number of points scored per game for two players, Player A and Player B, in their last 13 basketball games.

If you were the coach of a basketball team, which player would you want on your team and why?

• Player A because his lowest score was 14.

• Player A because the range and IQR indicate he is a more consistent player.

• Player B because he scored 46 points in one game.

• Player B because the range and IQR indicate he is a more consistent player.

Tags

CCSS.7.SP.B.4

Matthew asked 10 students how many pets and how many siblings they have. The line plots show his data.

Which of the following statements correctly describes Matthew’s data?

• The median number of pets the students have is less than the median number of siblings the students have.

• There is less variability in the number of pets the students have than in the number of siblings the students have.

• The range in the number of siblings the students have is less than the range in the number of pets the students have.

• The mean absolute deviation of the number of siblings the students have is less than the mean absolute deviation of the number of pets the students have.

Tags

CCSS.7.SP.B.4

A scientist is studying the effect of rainfall on the height of a certain species of sunflower. The scatter plot shows the results. What conclusion does the data support?

• This species of sunflower will not grow over 8 feet high.

• With over 4.0 centimeters of rain per week, this species of sunflower will grow over 12 feet high.

• This species of sunflower grows tallest when there are between 2.5 and 3 centimeters of rain per week.

• If the rainfall is less than 2 centimeters, then this species of sunflower can still reach its maximum height.

Tags

CCSS.HSF.IF.B.4

Casey conducted research on the amount of time people spent at the mall and the amount of money they spent. Casey calculated the line of best fit as f(x) = 1.05x – 2.63 and correlation coefficient of r = 0.08 for her data set.

Which of the following statements BEST describes the relationship between the amount of money spent and the amount of time people were in the mall?

• The events have a strong negative linear correlation.

• The events have a strong positive linear correlation.

• The events have a weak positive linear correlation.

• There is little or no linear correlation.

Tags

CCSS.HSS.ID.C.8

While studying medical treatments, scientists noticed a relationship between two of the treatments when applied together. As Treatment X became more effective, Treatment Y became less effective. Which scatter plot BEST demonstrates this relationship?

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Tags

CCSS.HSS.ID.B.5

A reporter surveyed 300 randomly selected people of all ages about their opinion of a new song. The results are shown in the table. Which of the following is a valid conclusion about the data?

• Most people had no opinion about the new song.

• More than half of the people who liked the song were 25-46 years old.

• People who did not like the song were more likely to be older than age 46.

• The people who had no opinion were most likely to be younger than 25 years old.

• 70% of the people who were younger than 25 either liked the new song or had no opinion.

Tags

CCSS.8.SP.A.4

Which of the following statements BEST describes the association?

• The data shows a positive association with a trend line of y = 2x + 3.

• The data shows a positive association with a trend line of y = 2x – 3.

• The data shows a negative association with a trend line of y = -2x + 3.

• The data shows a negative association with a trend line of y = -2x – 3.

Lydia suspected that the relationship between temperature and electricity consumption is not linear for all temperatures. She collected data for peak temperatures down to 0°C as shown in the graph.

• When the peak temperature is 40°C, 35 units of electricity are used on average.

• When the peak temperature is 40°C, 48 units of electricity are used on average.

• When the peak temperature is 40°C, 72 units of electricity are used on average.

• When the peak temperature is 40°C, 99 120 units of electricity are used on average.

Which of the following equations could be the line of best fit?

• y = x + 100

• y = x – 100

• x = 100

• y = 100

Tags

CCSS.8.EE.B.5

The equation for the line of best fit is:   $y=\frac{1}{3}x\ -13$ 

Which of the following statements BEST interprets the slope of the line of best fit?

• For every 1-inch increase in height, shoe size increases by 3 sizes.

• For every 3-inch increase in height, shoe size increases by 1 size.

• For every 1-inch increase in height, shoe size decreases by 3 sizes.

• For every 3-inch increase in height, shoe size decreases by 1 size.

Tags

CCSS.HSF.LE.B.5