Mastery task

Six items on the distribution of one Treasury tenor's daily yield changes over its last 250 trading days — a tenor no lesson in this course used, chosen at render time. Read the mean, median, standard deviation, percentiles and tail count from the record named below and work each item from them. Pass mark 80%.

Pass mark 80%. This attempt’s record: 7-Year Treasury Par Yield (as of 2026-09-15) — not used in any lesson.

  1. 1. Using this record, by how many basis points does the mean daily change differ from the median daily change? Enter mean minus median, to one decimal place; a negative answer is allowed. (The record's figures are in percentage points; 1 basis point = 0.01 percentage point.)

    Source record: 7-Year Treasury Par Yield (as of 2026-09-15)

    Before you answer: how confident are you?
    Tolerance ±0.15 bp
    Choose your confidence first.

  2. 2. The record's skew proxy is the mean minus the median, divided by the standard deviation. The sign of that figure tells you:

    Source record: 7-Year Treasury Par Yield (as of 2026-09-15)

    Before you answer: how confident are you?
    Options
    Choose your confidence first.

  3. 3. Using this record, how wide is the band that holds the middle half of the daily changes — the 75th percentile minus the 25th — in basis points? Enter to one decimal place.

    Source record: 7-Year Treasury Par Yield (as of 2026-09-15)

    Before you answer: how confident are you?
    Tolerance ±0.15 bp
    Choose your confidence first.

  4. 4. Using this record, what share of the daily changes lie more than two standard deviations from the mean? Enter as a percentage of the days in the window, to two decimal places.

    Source record: 7-Year Treasury Par Yield (as of 2026-09-15)

    Before you answer: how confident are you?
    Tolerance ±0.05 %
    Choose your confidence first.

  5. 5. Suppose this tenor's 250 daily changes were plotted against another tenor's daily changes over the same days, and the points lined up closely along a rising diagonal. Together, the record and that plot establish:

    Source record: 7-Year Treasury Par Yield (as of 2026-09-15)

    Before you answer: how confident are you?
    Options
    Choose your confidence first.

  6. 6. Using this record, the latest-percentile figure is best read as:

    Source record: 7-Year Treasury Par Yield (as of 2026-09-15)

    Before you answer: how confident are you?
    Options
    Choose your confidence first.

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