Hook — practice makes the chart less mysterious

Knowing the terms open, high, low and close is different from using them correctly on a real-looking worksheet. A learner can identify a red candle but forget that one completed interval does not report every transaction or reveal the order in which high and low occurred. This lesson provides four invented daily OHLC bars and asks the learner to compute body direction, wick length, range, and an aggregated four-day summary. A worksheet is valuable because the calculations can be checked independently; there is no need to guess motives or predict the next close. The exercise is entirely fictional and deliberately excludes transaction fees and any personal portfolio. Work with a pencil first, writing the unit ₹ next to each result. The object is to recognize what chart data proves and to write 'unknown' when the original observations do not answer a question.

Concept in depth — four rows are not a transaction diary

Every normal OHLC bar has an opening selected price, a high, a low and a closing selected price for its stated period. For internally consistent values, high must be at least the larger of open and close, and low must be at most the smaller. The body is the absolute difference between opening and closing prices. A positive close-minus-open change describes an upward body under a common candle-colour convention; negative describes a downward one. The wick lengths connect the body's extremes to the high and low. Importantly, a bar cannot tell us when its high and low occurred relative to one another, whether a given customer traded there or how many times those levels were touched. Several adjacent bars can be rolled into a larger interval by using the first open, maximum high, minimum low and final close. Averaging all four closes does not produce the larger period's closing price.

Concept 1

A candlestick or OHLC bar records open, high, low and close for its own interval. Before interpreting it, verify that high is not below open or close and low is not above them. Source A · Source B. Desi example: A mandi clerk writes opening, highest, lowest and final rice-bag quotes in a ledger. Hypothetical worked example: Invented D1: O100, H105, L98, C103. Its high–low range is 105−98=7 units; its body change is 103−100=+3. Invented classroom numbers; no live quote, conversion, fees or trade instruction.

Concept 2

Compare completed candle closes with their own opens. A higher close means that candle rose during its interval; it does not say that the next candle will rise. Source A · Source B. Desi example: A dukaan's day-two final price exceeds its morning tag, but day three finishes cheaper. Hypothetical worked example: Invented D2 O103/C107 → +4; D3 O107/C100 → −7. Across D2 open to D3 close, 100−103=−3; do not call the first candle a guarantee. Invented classroom numbers; no live quote, conversion, fees or trade instruction.

Concept 3

A worksheet should separate measured facts from subjective zones and forecasts. Identify extremes first, then describe a possible area without calling it permanent support or resistance. Source A · Source B. Desi example: A truck dispatch sheet records the cheapest and costliest freight quote, not next week's rate. Hypothetical worked example: Invented four-day highs 105,108,109,102 → maximum 109; lows 98,101,99,95 → minimum 95; overall observed span 109−95=14. Future prices remain unknown. Invented classroom numbers; no live quote, conversion, fees or trade instruction.

How it works — a reproducible worksheet routine

Draw a table with columns Day, O, H, L, C, body change, upper wick, lower wick and full range. Check each bar's validity before doing subtraction. For each day calculate signed change C−O; write whether this is greater than, equal to or less than zero. Calculate upper wick H−max(O,C), lower wick min(O,C)−L and range H−L. Confirm that body length plus upper and lower wick equals the full range. This arithmetic identity is a powerful self-check for ordinary OHLC candles. Next aggregate the four days without mixing price units: first day's O, highest H across days, lowest L and last day's C. If you need a percent change, declare the starting reference value. Finish by writing two evidence sentences and two uncertainty sentences. Leave volume, fills, bid–ask and the order of extremes unclaimed unless separately supplied.

Desi example — a rice seller's four-day notebook

Desi udaharan: Desi example: A fictional rice wholesaler records the first quoted sack price, highest, lowest and last for each of four days. On the first day the notebook reads O ₹100, H ₹105, L ₹98, C ₹103. The note tells the merchant the last quotation exceeded the first by ₹3, but does not identify how many sacks were sold at any of those prices. On a later day, the last quotation might be lower even though the day's maximum is high. A weekly report prepared from this notebook uses Monday's first quotation and Thursday's last quotation, not an arithmetic average of the four closing entries. Storage charges and sales margins remain separate records. Financial candlesticks work with formally defined market data, yet the same distinction between a summary and a full sequence applies.

ILLUSTRATIVE ONLY — calculate all four candles

Use four fictional rows: D1 O100 H105 L98 C103; D2 O103 H108 L101 C107; D3 O107 H109 L99 C100; D4 O100 H102 L95 C97. D1 signed body +₹3, upper wick ₹2, lower wick ₹2, range ₹7. D2 signed body +₹4, upper wick ₹1, lower wick ₹2, range ₹7. D3 signed body −₹7, upper wick ₹2, lower wick ₹1, range ₹10. D4 signed body −₹3, upper wick ₹2, lower wick ₹2, range ₹7. Aggregate the four days: O100, H109, L95, C97, giving overall change −₹3 and full range ₹14. The mean of daily closing values is (103+107+100+97)/4 = ₹101.75, not the four-day close ₹97. No reference is a live market price; neither a daily body nor the average proves net income.

Key points

- Write the chart's interval and OHLC before any interpretation. - Check arithmetic: close minus open and high minus low. - Observed highs/lows are not future floors or ceilings.

Common mistakes

- Confusing the high with the close. - Drawing a certain forecast from four invented bars.

Common Mistakes — wrong wick endpoint, wrong aggregation

For an upward body, subtracting open from high to calculate the upper wick would include the body's height and overstate the shadow. Always subtract the larger of open and close. For a downward candle, the lower wick is measured from the smaller endpoint, not always from open. Another error is adding the highs from four days to obtain a weekly high; the larger interval's high is the maximum, not a sum. Averaging the four closes also does not create an official four-day close. An unfinished last candle might later change its OHLC fields. A student can wrongly infer the day's high occurred before its low, or mistake the green colour for proof the next day will rise. Before claiming a monetary result, ask for actual filled quantity, entry and exit and all charges. An OHLC table is not a brokerage statement.

Real-world-style scenario — verifying an infographic

A fictional education editor receives a chart image captioned 'four straight days of growth.' The underlying invented table actually contains two upward bodies followed by two downward bodies. A reader can independently check D3 by calculating 100−107 = −₹7; the caption is therefore inconsistent with the table. If the editor also sees a weekly chart, the aggregation should be checked against O100, H109, L95 and C97. The closing price of ₹97 is below the first opening of ₹100, so the overall illustrated change is negative despite the earlier two green bars. Nothing in this exercise tells us what economic announcement caused the move or whether an investor lost money. The appropriate caption describes the calculated values and credits the fictional dataset, without adding a prediction.

Summary and recap — one row at a time

Start with the four OHLC fields, verify their order, and then compute signed body, upper shadow, lower shadow and complete range. The body plus two shadows should reconcile to the range. When combining bars, first open, largest high, smallest low and final close are the correct summarized fields. The invented four-day bar is O100, H109, L95, C97; its change is −₹3 even though two individual days finished higher than they opened. A four-day arithmetic mean of closing prices is a different statistic. Actual gains, fill availability, fees and the sequence of intraperiod highs and lows remain unknown. This practice builds chart-reading confidence by separating reproducible calculation from speculation.