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Stat Tutor

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0:41

Incorrect. Time series data are data collected over time. The only data sets collected over time are the daily prices of diesel fuel.

Correct. Time series data are data collected over time. The only data sets collected over time are the daily prices of diesel fuel.

Incorrect. Try again.

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1:23

Incorrect. Time is always plotted on the X-axis in a time plot.

Correct. Time is always plotted on the X-axis in a time plot.

Incorrect. Try again.

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2:28

Incorrect. A time plot gives both information about the values of the variable and information about how the variable changes over time.

Correct. A time plot gives both information about the values of the variable and information about how the variable changes over time.

Incorrect. Try again.

2

4:47

Incorrect. Overall flower sales increased over time so the trend is upward.

Correct. Overall flower sales increased over time so the trend is upward.

Incorrect. Try again.

2

Incorrect. The dip in sales indicates when a depression began.

Correct. The dip in sales indicates when a depression began.

Incorrect. Try again.

2

Incorrect. Seasonality is a pattern that repeats at periodic intervals over time. So for the months of December, May, February and April, you would expect corresponding spikes with sales for the other months lower.

Correct. Seasonality is a pattern that repeats at periodic intervals over time. So for the months of December, May, February and April, you would expect corresponding spikes with sales for the other months lower.

Incorrect. Try again.

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